A new approach!

 Hi friends, it`s been a while, I m trying a new approach for laying 0-0 at Betfair to get more value from market.I will only lay 0-0 or back 0.5 goals after the break if the half time score is 0-0, but this will not be random on any game, it will be based on how the game evolved till half time, h2h between the teams and current form. Any suggestions, ideeas are welcomed!