"I thought the Generals were due!" -- Krusty the Clown
Would you make a bet that was guaranteed to win $2-$3 no matter what the outcome?
Maybe that's not a huge gain, but what if you did it 100 times? Or in my case 1,221 times? It's not an infinite money glitch because eventually you're going to get caught and limited. But it's a great way to build a bankroll over the course of a year.
Google the topic and watch a view Youtube videos to see how it's done. Bookmark sites like OddsShopper and Pick the Odds.