We've hauled our in our toyhauler. Tips & Tricks....
1) Use steerable dollies on the skis at the foot of the ramp.
2) Remove as much snow with a broom before loading.
3) Place a rubber-backed carpet under each track.
4) Remove sleds immediately upon return and clean up any water.
5) To protect the cabinets from melting snow, I always place a row of towels at the front of the loaded sleds to aborb any melting water that may drain towards the front of the trailer. Then when the sleds are unloaded I use the same towels for a quick mop job to the floor. Between the towels and the rugs, you should have it covered. We also pack in tubs, so I actally pack the tubs next to the cabinets and have the towels between the tubs and the sleds. One more layer of protection.
6) Open the doors and turn on all vents when running the sleds in and out of the trailer to control exhaust.
We have to load one sled in backwards to get them to fit, but both sleds have reverse so it's not an issue.
Good luck!
EDIT: Oh, we have a 26' Gear Box.