Whenever trailering the GS, I have always used straps attached as high on the bike as sensible to reduce strap loads as well as increased security and minimize load to the bike at attachment points.
At the front, I roll the bike into a wheel chock and use ratchet straps at the fork brace oriented so that the straps are pulling the bike forward slightly into the chock.
At the rear, I secure straps to the passenger peg mounts with only moderate compression of the rear suspension. Finally, I place a chock at the rear of the rear tire.
I have trailered my GS thousands of miles in this manner without incident. Also, I put a cover on the bike and use bungees to secure the cover.