Personally, I use
Trigger Clamps for all my moving fixtures. Much easier to hang with onto truss and battens. For pars, lekos, and LEDs, I use good old C-Clamps. I have a bunch of
Swivel Clamps to do a bunch of different things with. They are really useful when you need them, but grab in pairs since one swivels, while two attached at different points don't.