Was looking for some input. I'm thinking about buying a Terrova over the winter for my 2011 Z7. 1st, do any of you have experience with the Terrova, good or bad? 2nd, does it require buying a sliding mount/bracket? I hear they have to sit out a little further because of a clearance issue, but then they hit the roller eye when launching or putting it back on the trailer? Appreciate any help, thank you.