Hello HAWGHUNNA,
I spent a lot of time, money, effort ect. trying to make Polywood work. I was convinced that it would replace my wood lures. I made lots of molds out of bondo and invested in a static mixer. I was able to make some lures but found that every time I ordered new Polywood it was different. Weighed different and mixed different leaving the lure weight different.
Then came trying to paint without the lure looking like the surface of the moon with craters and pinholes. Yes I washed the lures in everything from caustic soda to MEK and I let them cure for weeks at a time. I used several types of release agents and even shoe polish. The tech told me it was some sort of phenomenon that was occuring. His way of saying give up and dont bother me anymore.
Then when I did finaly get some lures to come out ok, I exitedly handed them out to my best customers for their aproval only to hear. Nope, dont sound right and dont run right, I like the old ones better.
So I cut my losses and went back to good ole WOOD.
I havnt tried the other types of foam mentioned but plan to in the future.
Good luck...............