And then here they come.
From out of nowhere, you will find your boat surrounded by a buzzing horde of yellowjackets, come for the moisture, or more likely for the meat. Once the first scout gets back to the nest with the news of free eats, you are doomed.
We learned this trick in Canada at Ganges Harbor. The Tree House Restaurant there has outdoor seating - it should be swarming with yellowjackets. And one occasionally does fly by. But you can eat outside in peace. Why?
Because they have these brown paper bags inflated and hung all over. Our waitress explained that the yellowjackets see the bags as paper wasp nests and stay away accordingly. Maybe they are natural enemies? I don't know. But give it a try - it works!