It's really easy. My dolly sits under the boat on the trailer and I pull it out from the back and assemble the t-bar. The dolly sits on the ground and the handle hooks nicely onto my "flipped-down" mast support at the back of the trailer (after the mast is removed). I strap my hull chocks on the back of the boat. Standing at the bows, I push the boat back off the trailer and about the time it becomes unbalanced on the rear beams, the sterns are nicely over the cat trax. Then I go to the back of the boat, lift the sterns, and finish pulling it off the trailer.