Do you know if single rollers can be converted to double? I have a Longe trailer with single rollers and the possibility of the skeg denting occured to me too. What type of double roller set-up is needed to avoid this problem?
I converted my single roller to double rollers by welding up a simple bracket. Check the following photos. There is enough clearance for the unit to rotate slightly on the center mounting bolt so the rollers conform to the boat.
Fort Loramie, Ohio