What methods are available for finding surebets?

There are only two methods.

1. Manually. It has long been outdated. Nowadays, the lifespan of surebets sometimes amounts to dozens of seconds, especially in Live mode (where the greatest profit can be obtained). Finding all of this manually in time is practically impossible.  
2. Using specialized software (scanners). This is software that will find surebets for you. There are also modifications that fill out coupons for you and sometimes even place bets. Of course, this is riskier (the bookmaker can identify you more easily), but also more profitable.