MrP
"Scalping" a stock index like you are doing must have a practical limit in terms of stake size.
There is a need for a fairly rapid response by the SB company when you are trying to place a bet and enter a trade. At a certain stake size the response rate may be too slow for your system to be effective.
Firstly, have you got any idea approximately what that stake size might be ?
Secondly, if not, rather than sticking at £ 10 or £ 20 per point, why don't you just continue to compound your bank and have the stake size grow so that your financial risk is always a fixed small percentage of your trading bank.
It is up to the individual and his or her attitude to risk just what that percentage might be.
If you did this you would eventually arrive at a stake size where the whole thing might become impractical from the point of view of SB response rate.
This stake size would represent your upper limit or just above your upper limit of practicality.
I am just wondering what that stake size might be.
Anyone got any ideas ?