question involving transom core

[edloh]

correct as long as he uses the correct demsity core. i end up using fiberglass imprenated fom core on my 23 for extra strengh.

[Caymanboy]

Personally I wouldn't use PVC board in that application. Doesn't really have the strength, compression properties I look for.
Laminating three pieces together to form one is fine as long as each piece is bonded together properly.
Just my 2c worth.
OP