The pilot reported that he was landing an amphibious, light sport airplane, in the ocean waters of an inland cove. He stated that after returning from a local area flight, he attempted to land in a more open landing area, but was unable to due to large ocean swells. Considering increasingly poor weather conditions and low fuel, he decided to land in a smaller cove that contained fishing boats. He stated that while landing he misjudged the clearance from one of the boats, and the right wing subsequently struck a trolling pole, which pivoted the airplane to the right. As a result, the right wing sustained substantial damage. The pilot stated that there were no mechanical anomalies that would have precluded normal operation.