i just start with a modest lot size, use repeat 5 times and allow the size to grow to some huge number.
Sometimes I get 20 adds.
This will all be better when we have a workable trailing stop.
I have a couple MT5 ea's with Martingale and they are lovely, I mean they are really impressive.. until they are not
And, sadly, I learned the hard way to leave the Martingale alone.
I think most people have to get burned before they see the reality, hopefully on a small account.
My 'secret' goal is to push EA Studio until I can net 3000 pips per day....