I use hitch carriers too, one on front and one on back when needed. My bikes are fairly lightweight dualsports.
I also have a cheapo leaf sprung 4x8 Harbor Freight folding trailer. I use it for lots of stuff, and it would do fine behind the motorhome with a bike or two on it. Yes it bounces a bit, but no big deal. If you've got the cash and want to really do it right, Kendon makes the best riding motorcycle trailers out there.
Personally I avoid towing if I can for speed limit reasons, but no doubt a trailer is easier to load a motorcycle onto than a hitch carrier.
On the rear, I use this carrier with my 350 pound bike:
SMC-600ROn the front I use this one with a 250 pound bike (I much prefer the above carrier, but already own this one so I use it when I'm bringing 2 bikes):
MCC-500
2004 Fleetwood Tioga 29v