Another option - check out aluma mc 10 motorcycle trailers. Not foldable, but light weight, and has a rock guard on the front of it. Mine tows well at any speed you care to drive.
Regarding the lifts that pick the bike up - cruiserlift and hydralift - they attach to the frame, not the hitch of a class a motorhome. and yes, you do of course have to remain within axle max weights, and yes, smaller motorhomes might have handling issues. air shocks and/or stiffer springs would be called for. still, the larger the motorhome, the better it will handle the weight of the lift system (approx 400#) and the weight of a large bike - goldwing 900#. if your motorhome has the size, you get to bring your motorcycle, and still have the hitch free for whatever else you want to bring!!
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