Wall thickness considerations

[Woodbutcher]

Thanks everyone, I thought I could offer some advise that could help people make a decision.

[KCStudly]

I thought I could offer some advise that could help people make a decision.

Yeah, we kind of skipped over that part. As soon as you showed us another picture of your beautiful craftsmanship, we turned into drooling zombies and lote are heads!

[rowerwet]

my sidewalls are 1/4" 1x2 and 1/4" ply sandwiches, with insulation wedged into all of the voids (I fail to see the need to glue it in) my next build will be just the 1/4" outer skin and 1x2 framing with foam board in the voids and carpet for the inner wall. If I choose to change some thing I can just cut away carpet and foam and glue a 1x2 where I need it. I used PLpremium as the only adhesive holding it all together (no screws or nails) for Storm Warning, for my next build I may use marine epoxy.
I fail to see the need for a thicker wall, I build boats that are just 1/4" plywood and they see more pressure than a trailer sitting on a frame being towed through the air.
3/4" ply seems like wicked overkill to me, even cookie cut to make it lighter. for door frames and windows just add an inner ring of plywood to make any depth you need