Barefoot International Tower Boom - Fits 2-1/4" and 2-1/2" Diameter TowersThe Barefoot International Tower Boom is a great tool for kids and adults, and works for a wide variety of watersports. The boom keeps riders up close near the driver or passenger and allows the boat to be driven at slower speeds. This helps beginners get their positioning right and get a feel for the water. More advanced athletes are also able to practice new tricks at a slower and safer speed. The tower mounted boom mounts outside of the boat to a