A chap I knew had one in Alderney, perhaps the ideal place to have one.
After running around on the sea and driving it up on sandy beaches, he would then run it down to the sea, at any stage of the tide, and drive her home. Having reached the harbour he would then start the drive legs engine, drive it up the slipway and along the road to his house where he would park it on his drive. This way no need to unload gear, waterskis etc. until you reach home. Oh, and Alderney police are a little more relaxed about that sort of thing.