Perf film - I made one up once from 4 mil plastic but never used it. I may give it go next time removing peel ply and bleeder cloth is like skinning a live gorilla. I've not had a problem with too dry of a lay-up without it.

Boards - I was thinking of makng the boards from the plans I have on the half - straight from just foam as they are not that large 2" thick at the thickest point and 12" wide. So I'd be working with 1" X 12" X 5' and bending it to a curve on a jig. Then matching the other side to the curve and glassing to the first half. If that works glassing the outside it to make a plug for a mold.

I have not seen any profiles presently used/sold any information on that?

Mike