Using the FatCat 4 Evo is easy. First, pick a suitable roof rack on your vehicle. Since it's tool - free, you can quickly attach the FatCat EVO to the rack. If you have T - Slot crossbars, you'll need to buy the SmarT - Slot Kit 2 separately and install it for a better fit. When loading your skis or snowboards, make sure they are centered in the mount. You can fit four pairs of powder skis or two snowboards. Always use the built - in SKS locks to keep your equipment secure. As for maintenance, after each use, clean the mount with a mild soap and water. Avoid using abrasive cleaners that could damage the mirror - black finish. Store it in a dry place when not in use to prevent rust and other damage.