1st post, looking for advice

[earle]

Originally Posted by scook

I'd brace it up so there's at least some hump in it - you don't want puddles on your deck.

I understand. I was thinking the same thing, but can't figure out how to do it, unless I glue the plywood up first and then glass the cross supports in place. Even then, will there be enough flex in the plywood to raise the centre line a bit after it's glued to the top?