I wouldn't strap to the handlebars. Kuryakyn makes some really nice frame mounted
Tie-Downs
that work far better than the handlebars.
The aluminum frame system is cool. I just added a second row of tie downs to the RV floor, (made sure all the back sides were indeed through frames and added nuts/washers to them) I also positioned my chocks (not as nice as the Condors) and drilled holes in the floor. I then inserted threaded inserts into the floor (gorilla glued) so I can simply remove the chocks when I arrive and toss a rug over the floor. No bumps and simple. When I tie down I use the triangle method, a strap from the Kuryakyn tie down bracket to the front d-ring and one to the d-ring just behind the bike front floor boards. I usually haul 2 Ultra's and they've never moved.