Step 10: Sanding, filling, sanding, finishing
If I hadn't been fighting the weight problems of the front and back and didn't have to work everything back just as it was just starting to cure I would have had a lot less sanding and leveling to do, but lesson learned, make sure your mold is reinforced and going to hold before you start the lay-up. I should have known better, but as usual I started working and got excited to see the final product.
I cut the excess around the bottom with the Dremel and a cutting disk and had no issues.
There were a couple blisters that I had to cut around and fill with the Bondo Fiberglass filler to patch up.
I sanded down what I could before I got to the fiber, added on an extra layer of just resin to help smooth things out. I then used Bondo filler to... you guessed it fill in the low spots. After that it was back to sanding, filling, sanding, primering, then seeing even more low spots, filling, sanding etc...
As for the Bondo, I measured out filler and hardener per the instructions and used my putty knife to apply it. Get it as smooth and level as you can and work quickly, it will save you a lot of sanding after application. If you are afraid of using Bondo or filler because of all the horror stories don't be. Use it per the instructions to fill in small gaps/dips and you wont have any issues.
I then measured the holes for the bottom mounts and drilled them out for the threaded rod. I folded a couple cubes of mat about 2" in size and ran the rods through those. With the cubes snug against the body I soaked them in resin so that I would have good support for the rods.