a lot of these types of threads dont go very far as each person has their own ideas, but that is the point imo, to look at different ideas and incorporate what works for you personally.
one thing that I need to point out is that my bottom line is money and win percentage makes zero difference to me. what that means is that I take anything I feel has a 54% chance of winning. also a lot of times I can hit just two out of 5 and make money if the dogs win su, and with baseball, winning percentage is really meaningless and that is a very larger number of annual bets.
and you also cant count on 58%. some years you will hit that, others you wont, most years you wont, and the more wagers you place the less likely you stay above 58% in EVERYTHING. trying to hit that percentage is more for single sport specialists, it's more difficult to hit that in all three major sports, college and pro.
to bet on a lot of games means you have to look at a lot of games, and that requires a lot of time and work. last year in the NBA I spent probably an average of over 70 hours each week. this year I spent a lot of time looking at the less public college basketball teams. for me, the nba is a lot harder to beat right now than college so I spent more time there recently, you have to switch gears and adapt constantly. if you cant look at 75-80% of all games each day, and then come to a conclusion on maybe 25-30% of them, grade the plays afterwards, and then track that for entire seasons and make adjustments, then it really wouldnt make sense to change something that already works for you.
the hardest thing to deal with, and one of the reasons that a lot of people dont like to bet 10 or more games a day, is the short term losing streak. you will have 2 wins and 10 losses in a day eventually, and you have to rebound quickly, if you pass the next day you usually pass on winners. at times you feel like you wont ever win another game, and then 2 days later you are on another big win streak. once you learn to deal with that, it's just a matter of circling games and shopping. if bad days dont hurt you and just piss you off, then you are right at the amount you should be betting on each. then it's just a matter of time, one way or the other.