NJ-Bill, I did like your idea for the front wheel chock. I have used these HF floor chocks in my garage for years. I do not have them bolted to the floor, but mounted on a 1x12 for the full length and glued HF tool drawer mat to the bottom side. does not slide on the garage floor when rolling the bike on or off. I used this same idea for the toy hauler.
Bottom with the HF tool drawer mat
I used a 6 inch in length 2x4 to catch the tie-down loop and a 1-1/2 U-Bolt (which measures 2" inside) to capture the HF Wheel Chock.
The 1x12 lifts the chock 3/4 of an inch to allow the U-Bolt to pass under and not touch the floor. No drilling in the Chock assy.
When I got to Denver this last weekend I rolled the bike and tie it down it did not move.