I have had a trailer valet for 2 years now due to real tight drive way. I have a 20 foot boat and it's done it's job. I have a 2inch lip going into my garage and I lay a couple boards down taking and putting the boat in and out. I also keep the trailer jack on just to help keep it level. But by al means this has saved from jerking it around and in and out of the garage. The only thing I can say is get the biggest one they have and the tires need to be filled every so often. Keep it oiled and I oil the chain often probably to often but it needs love too. But all in all it's a great buy for me any ways. Mine has really helped. Just got to work your own system.