The ballast jug can be filled with sand, gravel, or even concrete to provide the needed weight to keep the SwimStand stable and upright. Sand must be wet and fully saturated. Gravel must be topped off with water before cap is reinstalled.
The Swimbrella SwimStand will float in 3 feet of water with the extension and 2 feet of water without the extension.
Feed the end of the safety tether through the hole in the side of the pole holder from the inside out. Tie a knot in the end of the tether rope to hold it in place. Run the other end of the tether up and through a gap in the ribs, then around the pole, then back down through the same gap and hook the catch in place as shown.
Yes! Use of the extension is optional. The extension lowers the ballast jug 12 inches providing more stability in windy conditions.