Applications - Cup Holders
There never seem to be enough cup holders on a boat for everyone with a beverage.
Put a few on the V-Lock when you need them and pop them off when you don't!
Here is the V-Lock Large Cup Holder on the railing of a pontoon boat using the Square Rail Kit
This is an early prototype of the Cup Holder & Catch All.
The mack daddy of all cup holders: The DockTailBar (on the square rail kit)