I have them and they work great... Our beach area is hilly and didnt want to deal with a lift.... They weigh about 300 pounds..
Awesome in big waves and wind had 70 mph during a storm big rollers coming in.. I ran down there to check on pontoon no problems very solid......
I know some guys use them for pulling up to sandbars, let the kids swim and what not..

The only thing I wish the leggs came up and down a little faster..
Hope this helps...