I decided to go for a fiberglass rim again. This time, I went for fat 10 oz. fiberglass. The stuff is hard to wet out with epoxy, which it drinks up greedily, but I hope it will build the thickness up faster.
I used various rolls of tape to hold the foam down. I used 5 layers of 10 oz. glass, and finished with one layer of 4 oz. It appears to be thicker this time.
I also cut the hatches out today. The usual amount of shaping and correction.