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Thank you for the inspiration. Everyone loves them. I used the cutout piece as a base. Just drilled a few holes through the tires and wired them together.

Thanks for this instructable! Having shaped and glassed a handful of surfboards in the past, the goal with my SUP build was to make something cheap, quick, and good. But as the rule of thumb goes, you can only have two... I'd like to add my experience here to help others that attempt this project. Wanting an adult sized board, I used two sheets of 2" foam and made a board 10' x 35" x 4". Though my design was extremely stable, the board flexed quite a bit. To remedy this, I may cut the board lengthwise and add a stringer or 2 for stiffness. By bending the foam to the rocker you want (just prop up the front), you could then place a sheet of plywood alongside, trace, cut, then glue together.BIG TIP: The construction adhesive added a lot of unnecessary weight and took way too l…

Thanks for this instructable! Having shaped and glassed a handful of surfboards in the past, the goal with my SUP build was to make something cheap, quick, and good. But as the rule of thumb goes, you can only have two... I'd like to add my experience here to help others that attempt this project. Wanting an adult sized board, I used two sheets of 2" foam and made a board 10' x 35" x 4". Though my design was extremely stable, the board flexed quite a bit. To remedy this, I may cut the board lengthwise and add a stringer or 2 for stiffness. By bending the foam to the rocker you want (just prop up the front), you could then place a sheet of plywood alongside, trace, cut, then glue together.BIG TIP: The construction adhesive added a lot of unnecessary weight and took way too long to cure. Instead, I learned that 'Great Stuff' window and gap sealing foam drawn out in a zigzag with lines about 2" apart will glue foam together in about 15 minutes with next to no added weight. Just make sure to weight down or clamp pieces until the foam fully cures because it expands a whole lot. Be sure to use gloves and don't get it on anything you don't want ruined.I had an extra longboard hatchet style fin laying around so I put in a fin box. You probably don't want to do this since the fin alone costs as much as the rest of the materials. And even with that big 9" hatchet fin, the board did not paddle very straight! Instead, one might carve the bottom more like a "V" similar to that of a canoe.Having read a lot about Poor Man's Fiberglass, I gave it a go only to be bitterly disappointed. Even in the warm CA Summer, some spots of glue didn't seem to fully cure and the canvas/paint shell didn't get anywhere near as hard as epoxy resin. It looked pretty nice as you can see in the pics but in the end soaked up lots of water :(So in the end it was relatively cheap and quick to build. We had tons of fun for the day but now it's back to the shop to tear off the PMF and rework the SUP. Hope this helps and best of luck.