They work. I have two friends in my cycle club that use them and I have towed the rig once to place a friends bike in storage while they travel to the west cost with just their car as a toad. They take a little getting use to because of the solid axel but seem to work out once you get past that. I was almost going to by one but settled on a good deal on an enclosed trailer. With the tow dolly you can unload at your camp site or any other place that's good for you. I miss not being able to do that unless I have a long site. Check out this site for a tow dolly,
http://www.racecityrvproducts.com and here for the lift
http://www.overbiltlifts.com. Happy trails and ride safe.