fstevenj - I used a hot bow (For cutting foam wings) to remove the excess, but it was a little tricky - especially doing it alone - because the spray foam didn't cut as easily as regular foam does. If I didn't have the hot bow, I would have probably used a hacksaw blade without the handle. I didn't have to flatten out the bottom of the wheel well because the top sheeting wasn't glued to the foam. So I just cut the circle out of the foam with a hobby knife and ripped out the excess foam with a long-nose plier. Once I got near the bottom, since it wasn't glued to the sheeting, the foam just pulled free

Bernard, both top and bottom get glassed. Then the belly pan blocks go over the fiberglass