Square root staking plan
This is a quite well-known staking plan that helps you manage your bank.
I've taken the description of the plan from this page, but you can find other materials on the web.
This simple Staking plan should increase your profits during a winning run and minimise losses during a losing run and takes little explanation. Whenever your cumulative profit is positive, the square root of that positive number is added to your initial stake. For example, let’s say your cumulative profit is £49. Let us also assume your initial stake is £5. The new calculated stake is the square root of 49 which is 7 plus the initial stake of 5 which equals £12.00.
If you’re cumulative profit is ‘zero’ or ‘negative’ than the initial stake will always be the initial bet. In essence when you are not in profit the staking plan reverts to level betting.
The trigger file can be used to make both back and lay stakes. In the offered file the laying trigger is disabled, to prevent mess with bets. If you'd like to lay instead of backing, enable this trigger by settings its "Execute" field to the appropriate value, and disable the backing trigger by setting that field to "never".
The conditions of the betting triggers are basic - they both bet on the favourite, provided that the previous markets have been settled. You can change or amend those conditions according to your own needs.