does any1 know of the best tools to use to gather statistical information on betting exchanges.

or where i can find the best historical data.

i am interested in finding out how often and by how much lay betting on exchanges will create an abr situation with bookies who offer the best loss rebate or reload bonuses.

i am particularly interested in horses as this seems to offer the best volatility and obviously the highest number of trading opportunities.

has any1 been down this route already?

if i am wasting my time please let me know - no 1 likes to

many thanks