With good clamps and wide wing nuts, you should never have to use a tool to tighten tri-clamps. If you have leaking tri-clamps, it may be because of damaged mating surfaces or a faulty gasket. They do not require tools or excessive force to make them seal perfectly. Don't let your hoses smack against the floor because you're too lazy to lay them down gently. (One of my pet peeves--can you tell?) My personal belief is that tools are useful only to repair things that are broken. I don't think that tools have a place in the every day running of a brewery. Now of course I'm not talking hydrometers or other instruments. This is one reason I favor tri-clamps over DIN or other fittings. Oetiker clamps and quick-connects over worm-screw hose clamps and hose barbs.
Phillip Kelm--Palau Brewing Company Manager--