supposing that on any random hand, the fishy player wins 5% of the time, then it is most profitable to play the fishiest that 5% right? ....right?

OK, maybe not. I'll admit I was pretty (read: VERY) retarded this hand. but after the flop I didn't put anyone on the other 3. The initial raise I put on a Jack, a cold call on the flush draw, reraise on another jack with a strong kicker. I reraised to scare off the flush draw, which turned out to be the one guy who had me beat. Then the planets aligned, I sucked him out, and the three of them leave the table wondering what the hell I was doing in that pot with 23o, as I count their chips... wondering what the hell I was doing in that pot with 23o.