spray adhesive?
 

does anyone use that spray ahesive like in a spray paint can..I was thinking maybe you could spary it on ur tires or the rocks..i sprayed it on my little rock garden ,it made the rocks real sticky but havent tested it out cause broke the crawler...anybody tried it .

3M makes it. Maybe some other do aswell. The problem with that is it can cause leafs and dirt to stick to your tires aswell. Which would be bad in the long run. They make tire softeners that would work better.