Hi Brad. I actually have a couple of PGR Mission Flags. The first iteration I mounted on a fiberglass 1" flag pole & used the bottom rubber cup from a crutch to protect the rear fender when I bungeed the assembly to my detachable sissy bar. The second design, in which I used the collapsible aluminum poles from the PGR store, used an "H-shaped" PVC assembly which I mounted to the sissy bar. I took a short section of 2" pvc pipe & mounted 2" tee on either end. I notched the OD of the 2" pipe to make it more rigid on the sissy bar before I bungeed it. It worked very well at parade speeds. In a funeral processsion, however, not so good. I snapped one of the collapsible poles...Hope this helps.
PS I've since gone up to an Ultra & got a RIVCO triple flag mount with a billet aluminum sectional pole from www.graymachine.net...

I see you have a Xbones. Do you have a flag for PGR missions? I could use some help finding something for my Xbones. Thanks, Brad