16" floats are the only floats that can be used with commercial dock kits to install a decorative wood skirt without it being in the water. They are perfect for pontoons and large motorboats. They are also the least expensive option for larger docks as they have a higher weight load. However, you will need a ladder to get back on the dock after swimming. Available in Residential, Heavy Duty and Commercial dock packages. Floats will sink 4" into the water.