Cleaning the underside

He told us that he has to clean the underside of his inflatable boat at least once a month.   A self-cleaning inflatable isn't on the market yet.  :)
A beautiful day, perfect for sitting outside in the shade with a good book.  I'm off to do just that  (unless I get sidetracked by the football game - but then Germany's already up 2-0 so maybe I'll wait for the second game we have taped).
Extra:  a mystery man having a look under the hood of his car