Its so simple you won't believe me.
Today for example, I look at the lines when they come out for all the games.
Find the RL odds that will payout the least amount of $$ if it hits.
Today the LAA were +130 and yesterday NYY were +110. This is the game that oddsmakers think has the best chance to win on the RL.
So I bet 1 unit on the RL and 2 units on the ML. If the side I am wagering on wins by only one run I pretty much break even. If I win by 2 or more I make 3 units. As you can see by the week of plays I have posted it is pretty successful, even in Spring.
There was a poster on another forum who posted this a couple years ago. He said if there were two games that qualified and one was at 4pm and the other at say 7:30 that if the first one lost then double up on the 2nd one and the winning ratio was like 80%.
He has since went tout and they sell their picks for $ 56 per week.