What do you use? My 500mm f/4 is mounted to a Kirk QR plate, secured by a RRS B-2 Pro QR clamp to my monopod via a Gitzo head.
Now, Really Right Stuff has some great flash brackets that mount right to the quick release plate, but I'm not paying ~$220 for a flash bracket. It's laughable IMO.
I like the Wimberly bracket because it is so flexible and packable.
All have strengths !
Not sure of present price ,but like a good lens or tripod should last a looong time !
Chas.
Don’t forget that Kirk’s QR plates are only compatible with Kirk’s and Wimberley's flash brackets...But you could add a Really Right Stuff FB-A Dovetail Adaptor to fit with the other brands.