Mine was 84" and I've read a few that are at least 96" on here.
I'm looking to build longer than 96". Not too many builds with that dimension that reached completion.
E Elliot3
The plywood overlap sounds like a sound idea. I figure I'll just build in some extra bracing on the stand where the layover is and might call in a friend to do some killer fiberglass work on it.
Definitely considering the stacked 2x4 with plywood skin idea. Can't get much stronger than that unless you hit the "overkill" button.