Anybody using one of these in salt water instead of a Hydrohoist? Wondering how well they actually work to stop corrosion and marine growth. Looking for someone that has first hand experience with one of these. Any problems with them?

I already have a Hydrohoist now and it works great but my wife isn't a big fan. It kind of kills the "atmoshpere" when you want to hang around at the dock and have some cocktails and the boat is sitting up on the Hydrohoist. Looking at other possible options.

Thanks, Pat