Jet Tech board racks are designed for domestic use. Installing, operating or otherwise utilizing this product in anyway, indicates that the owner or operator of this device has read and accepted these terms and conditions and limits liability and warranty. Jet Tech racks are only designed for water sport boards of width of more than 13 inches and no more than 21 inches, and length of no more than 8 feet. Jet Tech Board racks are only intended for Jet Ski’s. Owner or operator take full responsibility and acknowledge when using jet tech board racks, that they are carrying extra load and should adjust their operation speeds and turns to suit. All instructions are a basic guideline on how to set up your Jet Tech racks.