Theres a method to this, you stake accordingly and wait for the first goal , if its a home goal you sell at no real loss . If its an away goal,then your lay bet is dead [;)] and then you clean up on the 2-1 which by this time has shortened in price
If it goes 1-1 you're still in clover .an early 2-0 entails little damage.
Just don't let your bets run for more than 15 minutes from KO though ,sell at a small loss if you have to .