shb, are you fishin off the bank? Have you hung up with that well rope you're using? Man I have a hell of a time trying to break good 17 pound test, and think a fella could land most fish on even 14 pound test, with the exceptions of fishing around alot of brush and snags, I don't think you need more than something around 20.
I've landed some big fish with less than 20 pound test, but I do fish out of a boat, and use the motor when I hook a bigun.