A hungry 250-pound black bear broke into four boats in three days anchored off Heywood Island in the North Channel of Lake Huron, climbing up swim platforms, confronting owners in the middle of the night and generally sowing fear and anxiety. The local paper, The Manitoulin Expositor, says the first reported bear problem came from Brian Laux, from Walworth, New York, who was below in his cruiser Serenity, fixing dinner – a bass he had caught earlier. Laux heard a strange scratching noise and thought it might be a swimmer in distress. “But when I went outside there was a…