Great suggestions guys
I am going with trying spray bed liner but Bob’s suggestion sounds like fun. The issue is really bad if wet grass is behind the trailer then the car tends to go sideways at launch on the ramp.
I probably ought to start up the ramp from farther away at speed but am scared of snagging a bumper or mirror with the door cables. Tommy has a different door system on his gooseneck trailer that works well. Sometimes I close my eyes watching him load those wide Pontiacs at speed.
Robert