Operator of vessel 1 stated that he was just cruising and went into a big cove to just pass through and come out. As he was getting ready to make a wide turn to exit the cove he was distracted by a wasp and turned to spray it and he dropped the spray and he reached down to pick it up, sprayed the wasp and then turned back around just as his pontoon struck a sailboat anchored in the cove (unit 2).