I was just reading the article about Buoys and Race Course for R/C Sailing.

Below you will find 3 photos which show how I made some simple and great looking buoys from toilet bowl floats. It cost lest then $5.00 per buoys. I even added waterslide decal to the buoys to advertise a pizza shop located next to the lake where I sail.

I think these photos might inspire other r/c sailors to start racing.