I knew that would come up when I saw this thread...
Back in 1999 a new Nor-Tech 50V owner took off out of KW to catch up with the Boca Grande raft up. He'd never been there before.
After a little while they kept looking over the side and finally Oh S...!
Pulled back on the sticks and they were in 2' of water.
No problem call Sea Tow.
Well they had been running so long in 2' of water Sea Tow couldn't get to them.
They had to walk the line to them. Ran out of line twice and had to go back to KW for more. Finally reached them with a total of 5750' of line.
A new world record for the length of tow line!
And of course a bill of around $7000.