I've seen someone who brought a 35K account to 200K in 4 weeks. He sent me his trade blotter and account balance everyday, sometimes in the middle of the day while chatting. He was a scalper in stocks for 10 years at first but switched to NQ futures this year trading 1 or 2 contracts average and up to 4 contracts max. There's obviously liquidity and slippage issues to scaling up in these markets for this type of scalping.
I tried learning from him but it requires a lot of research and internalizing volume rhythms at micro time frames(sub 1 min and tick charts), while keeping up with general levels and patterns on a higher time frame such as 15mins. Caused an information overload for me and was hard to keep up. Was impossible to have win rates he had (90%ish).
There was no set risk per trade. It was more about reading the DOM and volume pace before determining he was wrong. For example, if he was expecting volume to push prices and nothing happens for longer than he thought, that means something changed or he read wrong so he would exit at market.
How long does it typically take you to double your account balance and how much do you risk per trade in % of account balance ( not liquid net worth).
Its really not that hard to double your account balance in futures day trading.
Really? LOL! Ask anyone here and if they are honest 99% will disagree. Considering you aren't going for +20% return per trade and just get crazy lucky.
Anyway, if your objective is doubling your account as fast as possible you are never going to succeed since that is the wrong way to go at it in the first place.