This is part two of our Advanced In-Play Trading articles. There are many different ways to attack an in-play market. My favourite strategy is the concept of back-to-lay. It’s at the top of my chart because it’s the easiest and consistently most profitable. It can work well in thoroughbred racing, but is most effective in harness racing. If all goes to plan you can be left with a ‘green-book’ and no matter what the final result of the event you can secure a profit.