Sonny,
I like your hit and run strategy. There are two problems with it that I see. First, how do you deal with a session where you quickly lose a couple of buy-ins? Second, with many very short sessions where you play very differently than other people, your opponents will start to recognize you and know your style of play, adjusting their play to make yours less profitable. Sooner or later the guys at the next table will be as familiar with your game as the guys at the table you’re leaving. So hit and run is fine, but only for an infrequent strategy. After the hours playing start to build up, I’ll bet that you end up with a strategy like the rest of us. If you can beat the game you’re in, stay in it. If not, pick up. It may sound boring, but there’s a good reason that everybody does it.