[John Owen]

I was indiscreet enough to slip my hand under the skirt of John W's car, and it was a foam product about 1/2" thick, not applied in the front where the boulder hit. Had prevented some damage. John Holt showed me some similar material from his Porsche race car, GT I think, after a couple of races - large holes in the foam material and fender damage. Then he showed me some rubber sheet about 1/8" thich, heaver, but seemed to perform better. The rocks hit your fender with near the speed of the car, so light materials fail quickly. I bought some of the rubber sheet, $50 to do a car or two, and hope to put it on before the Willis - will let you know how it works. Goes on with rubber cement from Home Depot.

edit - Perhaps if you don't run through creeks with your car, the light material will work