[dsraven]

some decent cotton reinforced rubber would be fine as well, with a metal perimeter to bolt through. like some treadmill mat or light conveyor belting. semi truck mudflaps could be another source but may be too thick and have less cotton structure. another thought is to fab something from sheet plastic which can be heated and formed. if fabbing with fiberglass you can also make the pattern from foam, cut and sand to get it like you want it, then fiberglass over it.