Wheel wells? How to seal?

How do you guys do wheel wells on your foamies?
I've put in wooden ones, but I'm having a hard time figuring out how to seal them. And the body is already bolted down so there won't be any fancy canvassing.
Any ideas?
I've put in wooden ones, but I'm having a hard time figuring out how to seal them. And the body is already bolted down so there won't be any fancy canvassing.
Any ideas?