I only started loosening up like that recently. I used to play a very tight PF range, and it kind of worked out.
I currently have the PokerTracker trial running, but I haven't really figured it out. If someone can tell me how I can look up what I won or lost by raising low ranking hands in EP, that would be nice.

And no, I completely disagree that people at 5NL play blind. If you don't play a hand for 5 orbits, you are definitely less likely to get called. If you raise about 25% of the hands you get dealt - which I do consistently, then other players will start to make hopeless plays against you. It comes with more variance. But I've played more profitably like that than with any other strategy.