::Still a work in progress and untested! Beware! Needed to mount my DIY LED lamp for my Native Kayak. Where I'm from, there are a large number of Native Mariner Propel owners. The most common diy lamp for the yak involves a 22mm Outer Diameter PVC pipe which is "pushed" into the side slots. I'm upgrading to a Native Slayer Propel and would like to make use of the tracks/rails that it provides. I will secure a 1.5" ball ram mount to the track and secure this object on the mount. (The ball mount is used so that I can tilt the lamp over the water while fishing or to make it flush with the kayak when stored) Unless you're making a mould, you should probably print this with solid layers, every layer. Just in case.