I play the same way as the OP, but I only use my index fingers on the back four buttons. If I need to press L1 and L2 at the same time I will use mu ring finger on L2. I find I can pull the trigger faster if I use my index finger on the trigger, and that can be the difference between winning and losing in some games.
ValentineBlacker said:
Everyone makes fun of me because when playing fighting games I'll usually set the thing in my lap and just forget about the triggers. The newer controllers (say, post-Dreamcast) make my hands hurt if I use them too long on account of the triggers, the GameCube controller being the only exception.
I don't know why they would laugh at you, that's how fighting games are meant to be played. Assuming it's an arcade fighter that is.