Don't leave your anchor at home.
Don't forget your oars.
Don't sit on the gunwale-the edge of the boat.
Don't alter course too suddenly.
Don't let go the helm for an instant.
Don't mistake caution for cowardice.
Don't be afraid to reef.
Don't let your gear get snarled.
Don't jibe in a stiff wind.
Don't get rattled.