Wooden Floor for a Seahawk 4 Fishing Raft
Intro: Wooden Floor for a Seahawk 4 Fishing Raft
Apartment life has its perks, weekends free from yard work and unexpected home repairs, But one thing most apartments lack is storage space for fun weekend things like canoes. Kayaks are small but not very 4 year old friendly.
This is how I was introduced to world of inflatable boats. I was hesitant at first but ultimately after being realistic about what we would be doing in the craft, lake exploring / lazy river floating and fishing for $100 what did I have to lose.
This is how I was introduced to world of inflatable boats. I was hesitant at first but ultimately after being realistic about what we would be doing in the craft, lake exploring / lazy river floating and fishing for $100 what did I have to lose.
STEP 1: Getting to Know the Seahawk 4
Once getting the raft home and inflating it I was impressed by the thickness of the 30 gauge PVC sidewalls of this thing. I would not want to hit class 3 rapids in it but it did not feel like a pool toy either. I was also taken by the size of this raft the dimensions on the box nearly 12ft long and just under 5 ft wide. Be sure to use the inflation gauge that comes with the raft it is easy to over inflate this is a common cause of issues in inflatable boats.
On the water with 2 adults and 1 child the raft was quite stable but as would be expected it doesn't track or paddle like a hard body boat. But this raft can float in less than 1ft of water and is quite manuverable.
After the fun filled maiden voyage I had three things to improve on: The oars that come with the boat are bit short and I plan to replace these. I have an idea to use the rafts motor mount lugs to attach a skag to help with tracking. The final area and first project was installing a wooden floor for better stability.
Even though the floor mod is a popular one for this raft I had a hard time finding any good construction info or details.
On the water with 2 adults and 1 child the raft was quite stable but as would be expected it doesn't track or paddle like a hard body boat. But this raft can float in less than 1ft of water and is quite manuverable.
After the fun filled maiden voyage I had three things to improve on: The oars that come with the boat are bit short and I plan to replace these. I have an idea to use the rafts motor mount lugs to attach a skag to help with tracking. The final area and first project was installing a wooden floor for better stability.
Even though the floor mod is a popular one for this raft I had a hard time finding any good construction info or details.
STEP 2: Inflate, Measure, Cut
After fully inflating the 3 chambers of the raft measurements were taken of the underside of the floor chamber. I am not posting every test fit and trim etc the dimension pic above is the final used dimensions after test fitting. If you spit the floor into 3 sections as i did to minimize storage space remove 2 inches from the center panel length. If you are making a 1 piece floor the measurements shown should work fine.
I used 3/8 plywood sheet this was ok but I feel 1/2 would have been a better choice after testing on the water.
I used 3/8 plywood sheet this was ok but I feel 1/2 would have been a better choice after testing on the water.
STEP 3: Sand Edges and Trim
After getting the floor cut sand the edges to prevent splintering. I used 1/2 foam pipe insulation (the kind you can find at any hardware store for $0.99 a stick) to pad the edges. Drill a parameter of holes 1" inside of the outside edge of the panel. The holes should be placed about 6" apart for cord or wire ties to lash the insulation to the edges.
I've seen staples used for this but pointy objects and inflatable things don't get along. Plus after use the foam will pull through the staples and have to be reattached.
Be sure to do a test fit with the edge covering before carpet covering. Also be sure to add a hole in the rear to access the floor chamber filling valve.
I've seen staples used for this but pointy objects and inflatable things don't get along. Plus after use the foam will pull through the staples and have to be reattached.
Be sure to do a test fit with the edge covering before carpet covering. Also be sure to add a hole in the rear to access the floor chamber filling valve.
STEP 4: Cover With Outdoor or Auto Grade Carpet
I covered both sides of my floor panels with automotive carpet. It can usually be found in 6ft x 8ft pieces and this was perfect for project.
The basic idea is to lap the bottom side of the carpet over the edges and staple on the top side of the panel then the top cover is cut to the edges and stapled over the overlap. This will ensure all staples are on the top surface. If they start to back out you can see this right away in stead of being hidden underneath. I kept all staples as close to the board edge as possible so that the once the pipe edging was attached it too would cover / protect the boat from loose staples.
The basic idea is to lap the bottom side of the carpet over the edges and staple on the top side of the panel then the top cover is cut to the edges and stapled over the overlap. This will ensure all staples are on the top surface. If they start to back out you can see this right away in stead of being hidden underneath. I kept all staples as close to the board edge as possible so that the once the pipe edging was attached it too would cover / protect the boat from loose staples.
STEP 5: Test Fit and Finish Up
If creating a sectional floor Completely cover and trim the bow and stern sections. Place these in the raft and test for the center section. This is when I realized the center would need ~2" taken from the length. Once all is fit correctly cover and trim the center section and enjoy your new robust floor.
STEP 6: Final Notes
The biggest plus to this project is the cost to fun ratio. I had to purchase all the materials for the floor upgrade which was around $35. Altogether including the cost of the raft I spent less than $150 for a portable rec. boat.
One could go all out adding seats and decks but then you would be in hard side boat money or you could buy a professional grade pack raft that will be rated for extreme rapids and made of ballistic material.
One could go all out adding seats and decks but then you would be in hard side boat money or you could buy a professional grade pack raft that will be rated for extreme rapids and made of ballistic material.
26 Comments
mrittman 1 year ago
Slackliner1 3 years ago
I just bought the same raft this week and decided to make a floor with hard .5” foam board. I saw that some people made a floor out of corrugated plastic, but those materials can get pricey, as you would have to layer several sheets. I also read of concern about the plastic taking on water over time, which I don’t think would be too high of a concern as a wet piece of corrugated plastic may be as heavy as a dry piece of wood of the same size.
I didn’t want to use wood because of its weight. The foam board seems to be good so far. It was very easy to work with. I cut it by hand with a utility razor. I wrapped/glued carpet to each section. Sure, it can be dented but for my purposes I think it will hold up fine. It was only $12 for a 4’x8’ sheet of it. They also sell 1” board for $19/sheet, but I wasn’t sure about going that thick. I have almost enough of the foam board left to double each section if desired.
I’ll post more info with pictures of it works well on the water.
yendors_1 5 years ago
Can someone please provide location measurements for access hole to floor inflation valve? Thanks!
GarthW12 5 years ago
Was looking for a good quick cheap boat so I can do a little more fishing. Settled on the Seahawk after reading this because it dealt with my biggest concern. So THANK YOU for taking the time! Next Stop ... Amazon.
viddybender. 5 years ago
MítTờC 6 years ago
Intex Seahawk 2 Wood Floor help me
Inflate, Measure, CutThanks
НенадС2 7 years ago
I m interested inicial dimensions of the flood
ToddS2016 7 years ago
Thanks syfrog! Is anyone else finding these measurements are too large? It seems like they will put a lot of pressure on the outer chambers. My measurements were more like 88" x 27 to 27.5". Comments? Experiences?
(also, I'm modifying this design by adding two hinges and some tie-down slits so it will double as a roof rack carrier for the boat)
syfrog 7 years ago
ToddS2016 7 years ago
Update: Out on the water the plywood floorboard seems to push the floor air chambers down more than in my shop, so some space appeared, but even after adjusting my initial measurements to 93"x28" it's still really tight until you get into the water, unable to add foam bumpers on land. It seems possible, just concerned about putting too much pressure at the seam of the floor/sidewall air chambers...
ToddS2016 7 years ago
Update: after my boat was inflated for a few days I was able to inflate it more and I'm starting to get measurements closer to yours. Also I found out the pump I bought was not strong enough so that's another reason the boat was not fully inflated. I'm still not at your full measurements but getting closer. I hope this helps the discussion...
phlynch3. 7 years ago
thanks a lot. just struggling a bit on the radius measurements. I see an X dimension, but don't I need a Y dimension to find the origin of the center to run the Radius curve. I must be missing something. For the 1.25" and 2.8" radius, you give an X dimension from center but no Y dimension. For the lower 3" radius, no dimension, but I assume this could be found by finding the origin that is tangent to both the vertical and horizontal edge. thanks for any help
syfrog 7 years ago
burkdog24 7 years ago
Do you like having the seahawk 4 floor inflated or deflated with the wood floors ? I would think that the floors would be more stable deflated, but not sure.
plesperance 8 years ago
I wonder if it would be possible to use old pallet's. I have the seahawk 3 but I simply don't have a way to transport such a large piece of wood to and from the lake the main reason I use inflatables is because they fold up and fit nicely in my bicycle trailer. If it was poisbile to use pallets that essiantally can be broken down and fit together like a puzzle then I could make a wooden floor for it, but I don't think it would work unless someone has an idea that would allow for such a design.
RachelM131 7 years ago
i saw someone made a hard floor and just cut it in half for easy transport and storage, brilliant idea. They used plywood i believe
syfrog 8 years ago
Perrunchin 8 years ago
Great, thank you for the response! I'll post pictures once mine is done.
Perrunchin 8 years ago
Hi. Thanks so much for the Instructable. I have an Intex Excursion 4 and I will be following your guide to make a wooden floor. I just have one question. Does the inner chamber where the wooden floor rests need to be inflated or you left that one deflated when in the water? From all the mods I've seen I haven't been able to figure that one out yet.
garg11 8 years ago
That is impressive!