It seems to me that even the soft straps around the front fender mount will touch the paint on the fender. (unless I have a different soft strap). I would guess this would cause some sort of damage to the fender paint.
The other day when working the bike in the garage, I had the front tire in the HF chock. I ran the soft straps over the triple tree and used the ratchet strap from that. I am still concerned about movement of the strap against the upper polished section of the forks.
I will have to look at using the frame/crash bar area next.
I will likely have to trailer soon and am in a quandary about where to secure the front of the bike.
On the Street Glide I used a Kiwi Indian tie-down for baggers.
I really liked this but not sure right now if it will work with the Road Glide Ultra especially with the air deflectors mounted between the front tank bolt and crash bar.
http://www.kiwiindian.com/#!hd-products/c1zkg
__________________
Jim
"Ride safe, have fun, wash hands often".

Current: '11 Road Glide Ultra. (3-9-13)