Betfair Trends?

[onlyme]

Wasnt quite sure where this should go but its something im thinking of looking into. Clearly if you back at a higher price than you lay you are securing profit. Has anyone looked into any circumstances which would pertain to this, either being big drifters in the market or backed heavily. I was thinking about a dogs/post picks one, whereby dogs that the post has picked (which dont look like straight forward winners/dead cert place) generally drift out, as more people decide they are value to lay. Come to a blank Evan