Lay at a loss or let it ride?

[Empa]

I talking about soccer markets.
I have a few developments in trading with the insurance, but they are not effective long-distance and unprofitable.
In what sense then insurance - to reduce potential profits?
Insurance must be one that:
= maximum loss should not be lower than expected profits ....
... and then taking into account the positive statistics can have long-term profits.
I'm looking for the optimal strategy by which you can have a good profit.
To date, my results are very bad - departures = $ 4500 for two months working on the Exchange. Plus Depression