Thanks,
codeman671...wish we'd thought of it. Even a stationary crane would have been very helpful in the 67 years we've boated from the same cottage on Winter Harbor.
Thankfully, the two 1000# mooring blocks were dropped off (that is...over the side) by a pontoon boat. The operator promised to relocate it in June if too far out (my opinion, anyway).
What surprised me is the moorings were round (like a tablet) and not rectangular (rectilinear= composed of straight lines).
A mooring kept on a short leash (to keep from neighbor intrusion) should have a block that won't "creep downhill" so readily--and have the float take off!