I've been in our's for a year (12.000 miles) now and have learned a few things with the road glide in the back. I have the Baxley wheel chock that has a very large foot print and it's bolted down with two bolts and two U bolts that secure it rock solid. One problem is the weight from the bike where the rear tire sits created a slight dent in the floor (after the first 6000 miles), so I just make sure there is a 2 foot by 2 foot 5/8 inch piece of plywood under the tire when the bike is set in the chock. Also make sure the ramp is properly adjusted and secure. I learned this first at the dealer while the unit was on display and I went to walk up the ramp and it folded in the middle around me...they didn't have it set up right!