Does the same thing apply to 1100s? Do you mean just one attachment on each side of the bike?Honda made it easy with the ST1300's.
Two eye bolts on the floor, a couple turn buckles, and a hook over the tip over hidden crash bar.
This is how they come to the dealership.
How far splayed out to the sides from vertical are you talking? What about front/rear movement?
I imagine I take turns faster and with more jostling than a semi with disassembled bikes in crates.
I'd be concerned about the leverage of the bike's weight over the relatively short tension pathway.