I once caught a five pound striper on four pound test. I was lucky I was under a bridge in about sixty feet of water ( not in this state!) . It took me about twenty minutes to get him tired enough to bring up. This was on ultralight tackle, I took my 4 1/2 ft. trout rod on a shakedown cruise with my buddy who'd just re-built his motor. He was messing around under the cowling and I dropped a small chartreuse jig down to kill time. Stren 4# test and it was brand new line. It was fun fun. Shakey leg fun.
Mattski-I would love to fish 2#, but my hands and eyes don't agree! If you're thinking about visibility, you might try flourocarbon.