When I bent the foam on my camper, 1/2 inch, the bending was not such a difficult thing, it was keeping it in the shape once bent. I was gluing it on the curve in the front, two two inch pieces of rounded foam the sides. I used wood skewers I am not sure how long screws would have held. once dry and covered with canvas, it held fine. My biggest problem was the humidity it stayed about 80% to 90% or more every day during the time I was building it. In one spot the glue took over three weeks to dry.

if I ever build again I will take more time and wait till it is dry or move to Texas to build.
I can somewhat see an eagle, I hope it works I like it somewhat better than the other one GPW.
Mary C.