Using this Yakima JustClick +1 is a breeze. First, make sure your JustClick 2 or JustClick 3 tow ball bike carrier is properly installed on your vehicle. Then, simply attach the JustClick +1 securely to the back of the carrier. When loading a bike, carefully place it on the attachment and ensure it's stable. As for the weight, remember not to load a bike that weighs more than 15 kg. To keep it in good shape, after each use, wipe it down to remove dirt and debris. Store it in a dry place to prevent rusting. Also, periodically check the attachment points for any signs of wear and tear.