I currently have a WheelDock chock which is a great chock... for my Goldwing... but it pinches the rear of the front fender on the Drifter. After some research I have found that WheelDock now has an Indian version which would likely work with our Drifters. They make these things by front tire width, so that have a bunch of different sizes. I have this mounted on my lift table, so to use a WheelDock I'd have to purchase one for each bike.
Condor makes a wheel chock that will work with the GW and with the Drifter. So that's the one I am planning to get to replace the WheelDock.