Next month, I go to Whitehorse to pick up my new Scott HB. I need to modify my canoe trailer, originally for a Osagian 17', to handle the HB's 21.5'. What I'm curious to hear from those with HB experience is about protecting the fiberglass hull from stones kicked up on the road. Have you had stone damage? Or, how do you protect the hull? I would expect that most of the threatening rock comes from the towing vehicle. Advice, suggestions?