mrv,

Think about it - Using the martingale or it's inverse says:

1)"I don't know what I'm doing" ((or 'I'm not sure where the market is heading"));

2) Trading Forex is pure chance which we know is not true;

3) "I'm ok with getting into another trade after a loss in perhaps a sideways or adversely affected market"

Forget about Martingale b/c you have to be the Casino and NOT the player