swimming with waterskiers

I recently moved to a lake in central minnesota. The lake is very weedy along the shore; for nice water I must swim closer to the middle. However, this lake is also home to a waterski camp and several avid skiing familys. Throw in some fishermen and pleasure boats, and you can imagine my delima. My first swim was a nerve-racking expirence. I was too busy concentrating on a 16 year old driving a ski boat with one hand, and a camcorder in the other to enjoy the swim at all. Several times I observed ski boats heading in my direction, then veering off at the last possible seccond. I am determined to swim the lake, but not without peace of mind. My question is this: Is there some type of equipment that would make me more noticable to boaters? I've tried pulling various floats. They either cause to much resistance or the rope chaffes my skin. Can anyone help? Thanks-Wade