Myself, (based on the recommendations here) got a 2" bolt-on receiver from Amazon, and ordered the Swagman bike rack, also through Amazon.
Mounted up nicely. Moved the spare tire to the right on the trailer bumper (keeping that tail light clear and most of the license plate) and had to offset the hitch/rack to the left so it would fully open. The one tire slot on the rack is JUST inside that side of the trailer so that the other end will easily drop flat and not hit the spare.
Gonna try it out in two weeks :) :) :)