Lack of inside access can sometimes limit paddlers rigging possibilities with the conventional usage of stainless steel screws and lock nuts. Tri-grip rivets are the strongest rivets for mounting on a kayak due to the back of the rivet flaring into legs as pressure is applied during the installation process, like a molly bolt in sheet rock. The Yak Gear Tri Grip Rivet also offers a rubber gasket under the head, when compressed fully helps it to be more waterproof. A standard rivet tool is necessary for installation.