[HydroJim]

If you're not afraid to do it, remove/cut whatever you have to in order to make a good mounting surface. Coroplast is light, but I don't think it will be water tight, so you might want to consider a different material. the coroplast never turns out looking too good also. it's cheap and light and that's why ecomodders use it. I'd look into fiberglass for your tail.