How much to bet??

Hi everyone.

I have started using the black jack charts for which cards to play but I dont know how to adjust my wager amounts, when playing online.

Is there a formula to use?

It a use a reasonable level I often seem to loose my money in the end, or if you use a small wager amount then it can take forever to bet the minimum amount to qualify for the bonus.

I would be very grateful for anyones advice or the system they use?

Yours

Phil Moore