I have 2 of them and have had 0 problems. I've got 1 mounted in my enclosed trailer and hailed my Ultra all over the country and she never moved.Got one from HF that captures the wheel with a stop which pitches forward against the rear of the front wheel, works good no elevation. Has pre-drilled holes for mounting.
Condor makes a great chock setup, Harbor Freight sells a lot of very "inexpensive" products, guess why they are inexpensive?? Just sayin.