Nothing that an International Harvester couldn't tackle on the hard.
There was report a few years ago about a Florida company that manufactured large Gin Mills without engines or navigational equipment at a very reasonable cost. The intent was for the owner to tie up the boat at a fancy marina and proceed to impress their friends and neighbours with nautical tales of their feats of daring do. After a while, when they wanted a change of scenery they would arrange to be towed to another marina and start the same show all over again. Something I have seriously considered after the winter of engine maintenance (in a shoe box) I've just been through.
I have seen worse. There used to be a boat in Friday Harbor, WA on H dock that had large leaf aquatic growth that hung down out of sight below the boat. you could see it down at least 10-15 feet on a good day.
Saw a boat in Charleston SC over 18" thick with oysters. Took 5 days on the hard to scrape them all off 28' boat. Everyone thought the boat was a write off bust she sails today, new owners have done her proud.