I've told this story here before but here goes again. Once ran aground
in the channel here at Shell Pt Florida where the channel markers mean
almost nothing. We sat for awhile waiting on the tide and a power
boater came along and offered to tow us off. He was insistent and the
tide was just about high enough so I said "Sure". He threw me the line
and just as I get it tied it to the bow he goes roaring off. I go
diving back toward the cockpit to avoid the rope I was sure would
break. Instead, there is a tearing sound and part of his transom goes
flying back over our heads. He barely manages to get the few yards to
shore before he sinks. Although I really didnt feel I owed him
anything for his foolishness I offered him some epoxy to help his
repair but he refused. A few minutes later, we floated free on our own.

If anybody gives you crap about running aground tell him your scraping
the barnacles off your keel.