There's nothing much to worry on this because if OP think it's the best for him then he can go ahead but if he thinks that isn't going to be profitable for him then why sharing to the public, everyone of us have developed one or two mea s whereby we gamble using a particular strategy to make our chances of winning increases, everyone is just working on their own end to see what works to their own favour while gambling.
True but is the OP strategy going to work, I mean you know the stronger teams always win most of the time so why will you be putting yourself in an awkward situation that most of the time won't favor you. We know underdogs wins at time but that doesn't happen always.
In a situation when the underdogs win and you had a bet on them winning, you'll make more money since their odds are always higher than the favorite teams that has more strength and better chances of winning the game. Still it's a very risky strategy that'll fail you most of the time.
Every gambler knows what works for them but you shouldn't be bringing an idea that won't work for majority of the players to the public as you'll be tempting others to try it and when they do, they'll fail. I prefer betting on the favorite team and win small than risking it for the underdog.