Keith, Thanks again for your timely, helpful, reply with safety and cost saving tips on using West System epoxy.
Based on your experience I'll let the first coat harden to seal the wood before recoating. I hadn't looked closely at West's prices. Their 207 hardener, that's best for a woodie, costs twice what 205 or 206 does. Woodies look beautiful. However, I want to avoid the grunt work of sanding and re-varnishing the outside every few years that a woodie requires to stay weather tight and keep looking good. My final outside finish will be paint.
I'm "considering" fiberglassing the roof and hatch and running the fiberglass down the sides a little. My reasoning is that the top and hatch are going to be skinned with two thin layers of 1/8" ply...epoxied fiberglass cloth would strengthen them...and provide a more water tight barrier to leaks where the roof and sides meet.
I'll likely use a little more costly sanded 3/8" or 1/2" plywood for my sides. The better plywood, I hope, will take less time and epoxy to get a nice smooth base for a good looking paint finish.
For the sides I'm unsure whether to use epoxy and fiberglass cloth, or just epoxy. Any ideas?
All the epoxied plywood will be painted, probably with boat paint, for UV protection, durability, and to dress up the TD.
My car has a 1500 lb. load limit. I think using epoxy and boat paint, rather than aluminum, for weather proofing will save a good bit of weight. It may cost less too.
