middle system???

Is there a system that involves trying to middle. or has anybody ever tried to do this with a certain set of rules throughout a season. Is there any stats out there on trying this.    I could be wrong (which is very likely) but I just think that between my books 5dimes,betus and my local, and playing the line movement right that I can consistently find 2-5 point middle opportunities (talking bout NFL and NCAA). Just looking for more info/advice on this strategy.

Thanks in advance

2-5 point middle opportunities seem like they would be pretty rare.  I use 5dimes, betjamaica and bookmaker and have never seen that big of a difference.  If you get 3 or more you may as well jump on it....It's worth the risk.