PVC Pipe Holder for 1.5inch Ball Mount

::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 m