Thanks for taking the time to reply, understandably systems like martingale can fail, if price is linear the wrong way many positions will spew out and dependant on position size, a large balance will be needed to sustain such time.
To combat an account drain the limit of positions could be capped, also at what stage multiple positions are opened, two ways to protect, with a third being the account balance, when the max margin is reached no more trades can be taken, quite a crude way but doable, or just put a “max equity available” into the programme.
Martingale systems can be forgiving in the first initial trade, get it wrong and it will have another go further along the line, get this wrong and another… a bit tongue and cheek but at some point a market turn will make it all worth while.
Used on the roulette table does not guarantee results, straight reds or blacks can happen enough to blow the account, I have tried a similar approach elsewhere and a few more positions would have put me back in profit, so maybe small and long as opposed to big and bust is key.
Too many taboos surround martingale, others are influenced by the “keep well away” but I do think in a large enough, stable profit making account, a martingale set at the lowest lot size could be the apportioned exposure to a high risk strategy.