Originally Posted by F1_Fan
This can be tricky... when I worked at a LBS we had this great pedal wrench with one end's slot at 0° and the other 90° so you could always find a good position. I think Park also makes one with 0°, 90° and 180° openings
You want problems... try removing one of the newer road pedals that only have a hex key at the backside of the crankarm. I'm cranking on a 5" long allen key with my precious carbon fibre downtube a few inches away... I've now got a short piece of copper pipe to slip over the allen wrench so I can undo the pedal in a controlled manner.
Why don't you just get a set of allen sockets and use a a regular ratchet handle. For the real problem cases you can use a breaker bar.