I found a forum on building from-scratch movie props and replicas, where a lot of the guys have been building all sorts of things from pink foam.
Some of them have had success with fiberglassing over pink foam by first sealing it with latex paint.
I have some "junk" latex paint kicking around, so I slopped some on the back sides of my test pieces before going over to the relatives for Thanksgiving dinner.
Hopefully, when I get back, it will be dry, and I can do "fiberglass test batch #2".
http://300mpg.org/wp-content/uploads...1/DSC_4122.jpg
http://300mpg.org/wp-content/uploads...1/DSC_4123.jpg
Hey, look! This is my 4000th post!