Ah, didn't realize he was using compression fittings.
Has any one tried that strap wrench from sears?
And to Joeh20: I have indeed found 3 inch couplings that the hooded screwdriver works but only on kind and that was a year ago. So many different brands out there. Why doesn't Klein make a hooded screwdriver that will fit "All Larger Brands of setscrew couplings.(but moreover why do they continue to use flat head set screws???) It really isn't a bad idea but like you said, hard to find couplings to fit the screwdriver over.