Lofted Bend Boat Hull

Pretty low hour user and first post. I'm doing something very much like a boat hull with the lofted bend feature.  It worked pretty neat.  I can flatten a bottom or side panel and have the exact shape.  Cool!  But I want more.  I want an accurate offset for a thick foam core and another skin to produce a sandwich and I want those also flattened.  So, Imagine 1/4" plywood, 1"foam core, and another 1/4 inch plywood on the other side.

This is just an example:

 

Any suggestions how that might be accomplished?

Thanks.

-Marcel

SolidworksSheet Metal