The VHF-antenna ratchet mounts on my boat tend to rattle loose, so I swapped them out for Glomex cam-action mounts. These look the same, except there's no lever on the side. Instead, you pull upward on the spring-loaded cam-action arm to loosen and adjust the fore/aft antenna angle, then snap it down to lock the antenna into position. The four-way stainless-steel mount also lets you adjust the side-to-side angle with an adjustment bolt. An antenna cable can be run up through the bottom of the mount, or you can lay the cable in a slot in the standard 1-inch thread mount, eliminating the need to remove connectors. The Glomex four-bolt footprint is the same as the most popular antenna mounts, making retrofits easy. Cam-action mounts cost about $65.