These are pictures of the GAL 12 Jet Ski Lift with electric winch.  Price, usually  $4300 installed.
This is the dockside cable lift we highly recommend for jet skis.  The galvanized steel post that is in the water must be securely anchored.  We take considerable care to make sure this post is anchored properly.  Once the post is firmly in place the lift is ready for 20 years of maintenance free use.
These pictures show 2 GAL 12 jet ski lifts installed along the dock.  If you look carefully at the pictures you will notice that the lift has swiveled the jet ski from the water to the edge of the dock.  This ability to rotate 360 degrees makes this a versatile lift.  Water depth is not an issue.