be much carefull with money manager, there's alot of scam money manager out there, all you have to find is the honest one. even with not to much in profit, but as long as it's stable one and at low drawdown. HFT trade been a hot issued among expert traders, many friend recomended such, and i do interested to develop one. on how to define any trading performance are good, better take a closer look on his trading result. first of all, HFT wouldnt works on metatrader platform, why?? there's no way metatrader allow exit trader for average 1 sec, oftenly below 1 nearly 0! because metatrader are 3rd bridge platform, so when he shown result on mt4 platform, stay away.
hft would applied on ctrader mostly, i found also at ninja platform. but there's thing you need check then, the brokers used! some manager are partnering with spesific brokers (oftenly new one), and giving an astonishing performance using thus brokers platform. simply is they semi-manipulated the performance, for example set up a no delay execution for thus account only. but that's not gonna applied on your incoming account. they just try lure clients to open account. so what's the advantage for the manager working such way, with those brokers, by having an issued of bad reputation ??
on off record case, perhaps only a rumours, the manager would gain amount % from clients account loss. for example minimum 10k usd, and then account are totally loss, the managers would get 40% for amount 4k usd from that single losing account.
it's just my opinion from many source, i dont intend you to take my advice, or become paranoid.
but i'm here to made you more cautious, fully aware, well prepare. that's all.