RedactedNarrative: THE OPERATOR STATED THAT HE WAS HAVING DIFFICULTY OPERATING VESSEL 1 IN THE ROUGH WATER CONDITIONS AND WAS ALSO SEEN OPERATING AGGRESSIVELY ON LAKE MICHIGAN. UPON ENTERING THE HOLLAND CHANNEL VESSEL 1 STOPPED, THE OPERATOR FOUND A ROPE/LINE WRAPPED AROUND THE PROPELLER, WHILE ATTEMPTING TO FREE THE ROPE FROM THE PROPELLER THE WINDS PUSHED THE PONTOON INTO THE SOUTH PIER SEA WALL CAUSING DAMAGE. NO INJURY.