Simply put, the smart money is the money bet by the sharps. Sharps can be defined in a number of ways, but basically they are the professional sports bettors who have better knowledge, do more and better research, have bigger bankrolls, and have a better long term expectation of profit than the typical bettor.

The best strategy in sports betting

1
An over or under bet.
2
Over or under bets per team.
3
Handicap victories, i.e. victories with a difference of several goals.
4
Low winning odds.
5
Half-time bets.
6
Early or late goals.