I started doing it this way last year when I devised a "system" with certain criteria (stats, a few trends, gut feeling, etc). I never expected it to be so successful but I can't argue with the results...up almost 300 units in 2 years and over 6,00 bets. FWIW, I don't have the balls to be betting anything like $100 per game. In fact, a few years ago I found I felt more pressure the more money I'd put on a game, so I scaled back my bet amounts and the rest...as they say...is history.