Here's an idea I'd like to put forward. What about fiberglassing the bilge panels right after they are stitched into place on the keel? This would not only be easier than trying to work the fiberglass panels in between bulkheads and floor joists later, it seems to me it would improve the overall strength of the bilge panels. (Easier to sand too, before the side and topsides panels are in.)
I've looked through the instructions and given it quite a bit of thought--so far I don't see a "fly in the ointment."
Any thoughts?