She cleaned up real nice on the outside!
Boat trailers are bolted together for two reasons. 1) So the center of balance/tongue weight (10-15% GW) can be adjusted properly. 2) So one doesn't get any unexpected cracks in welds.
It's good that you have a lot of space to work. You'll find out half of the boat is going to end up on the ground around the boat.
As for the wood, you really want to use a marine
ply!!!!! It's not that much more then weather
proofed ply. It usually comes with a mahogany or teak
outer skin. And attaching it to the hull is done with polyester resin and fiberglass
. You can use epoxy
too but it takes longer to cure. That's the way it should be in there now but quick Mexican job. After 1971 there were built by Mex's.
BTW when you do the inside keep it well ventilated. I heard of a few fires while trying to cure with heat lamps.
Here's the fun I had.