RedactedNarrative: Operator/owner of unit 1 reported he was westerly across Fox Lake.  The waves from other boats and wind made it rough water.  Unit 1 was moving approx 20 mph with a head wind of over 25mph.  The canopy top was covering the helm to the rear of boat.  Because of strong winds the two support poles holding the canopy up, snapped in two places.  This canopy top twisted backwards on the left side of the boat and the broken poles hit 2 of the passengers in the head.  Aid to these people was given while they were transported to shore where Fox Lake Rescue treated and transported both passengers to the hospital for stiches.