Did it today for the first time. Very easy. Jack it up and push it where you want it. You may have to fight the dolly wheel a little to change direction, and it wants to pivot around the dolly so you push from the back and then push from the front. I slid my boat to the opposite side of the garage and it was just too easy. You can push the tandem trailer into a slant if you jack the wheel way up and work at it, but you have to back the boat in just right first. I used four GoJaks, obviously, but you may be able to do it with two, which is a lot cheaper.