i always take copious notes on anyone ive ever played against and ive noticed that most of the fishies make the exact same predictable patterns over and over again... lol
e.g.:
- raise 4xBB with AT twice in 4 hands;
- limp in with hi pairs, bet pot on nondescript board few times in a half hr
etc etc
most ppl are very predictable and if only one is observant and concentrating on the table and not multi-ing or watching TV on the side and stuff, it could (almost always) be a good experience at the tables.