Update...not so bright...

[spareparts]

i think the name of the company is Compsys, they sell premade foam and fiberglass stringers, you just measure your baot, tell them what you want, give them the measurements and the ship you foam stringers with teh glass allready in place, all you have to do is install and add resin. Saw it on some do it yourself boat show, looked like a good system, a lot stronger and easier than makethem from scratch. Probably will be expensive though. If your planning on finishing the boat, do it so you will never have to redo it again