There is a thread on this, but I use the cheap carrier you can get from Princess Auto. I have had mine for over 5 years and have carried my XT225, WR250r, TW200 and DT200 on it with no issues. I did drill and tap the receiver so that I could take all sway out of the carrier and I drilled another hole in the carrier to get it closer to the truck. When travelling the Dempster Hwy the carrier was hitting the ferry or road when loading and unloading.
I do take the mirrors off the bike for 2 reasons: 1 they intrude on Linda's view, 2 the sun can hit the far one and blind me.
Check the bottom of this page and some of those threads will be linked or do a search for motorcycle hitch carriers.