jl114- Heh heh, I bet my setup is even crazier than yours! I have a pair of hoses on each side of the washbay- one hose for the foamgun and the other for rinsing (and then there's the one for the CRS....).
For the foamgnun, I screwed a Gilmour AS1FF shutoff (link:
Full Flow Poly ) attached to the gun via a brass quick disconnect in place of the pistol grip, and I have a second brass quick disconnect attaching the shutoff to the hose. It's easy (well, at least IMO) to operate the shutoff with the thumb of the hand that's holding the foamgun. The full-flow shutoff seems to produce considerably more foamgun output than I got with other, more restrictive shutoffs.
All those quick disconnects make it easy to change things as needed and, perhaps more importantly, they allow everything to *rotate* freely.
When I'm rinsing or otherwise laying the foamgun down, I lay it across my rinse bucket. Having the straight connection to the hose (as opposed to the pistol grip) makes that easy.
FWIW, I use the same style of shutoff, but in the low-flow/restrictive version, and brass quick disonnects for my rinse hoses too. Easiest way, at least for me, to get the water on/off, more so than twisting a nozzle for instance.
That's good that the plastic-dial foamgun comes apart OK. You might want to clean out those holes every now and then; even with soft water I get a little buildup.