trailer dolly experience

[parrothd]

Has anyone had any experience with one of these.

https://www.amazon.com/Trailer-Valet...ct_top?ie=UTF8

Trailer Valet TVXL25 Jack/Leveler & Chock

My situation is, I'm looking at parking boat in 3rd stall of garage. Its gonna require some carefull maneuvering since the 3rd stall is recessed 2 ft and its not a straight drive in. I'm gonna have to come in at an angle and carefully maneuver through a 9 ft wide door. So, looking at solutions to make this easier. I could prolly drive it all the way in but not without risk. I'm thinking driving it up until the transom and rear tires enter garage and then use a powered dolly to push boat the rest of the way. The driveway is a mild incline of maybe 7-8 degrees.
Anyone have any experience with these?. I keep reading amazon reviews and they're all over the place, high positives and strong negative reviews. Not sure who to believe.

7-8 degree incline? No way, they work great on flat ground. I had the same issue with my smaller LSV, I'm in an alley. Would use the truck to get the rear wheels into the garage over the lip. Then swap to my trailer mover for the last few feet. My trailer mover struggled going up any incline, if you try it make sure to lock out the brakes.