All great ideas
These are all great ideas.If you're not going to use your boat for a period, try tying mono line between the fixed rigging, boom, and aft sections (anywhere they're likely to fly/approach to land). They don't like flying into line and will avoid your boat, in short time.We have mono tied across the top of our pool area in a random nature. Not even ducks will attempt to use the pool as a resting stop.