how If you beat in one hit aside from losing, then your money or capital comes from someone who's anytime to kill, So it's very dangerous to proceed, it's up to you, but this recommendation about a position is riskier.
Think about this way, someone (investor) who is ready to risk their hard earned money to some trader who themselves claims like they are perfect in trading and promising about consistent profits, then that investor must ready to accept whatever results bringing up by those traders. It means once you are making yourself accepting their terms and conditions than you need to accept whatever the consequences.
We never know what will happen in the future, and it is better we risk our money than to risk other people's money. If we can risk our money, we will know how to prevent the risk, and we always work hard to avoid the big risk.
But, from the perspective of investors they are ready to risk by believing into some traders' skill set. It means they are unable to trade by themselves and that must be the reason why they want to hire someone else to take care of their funds but for trading purposes. I believe this kind of dealing is already happening on most of the markets and because of it remains profitable to the investors, I guess this kind of trends are still keep popping up.
OP's case can be different and it is all about dealing only with friends. I guess this type of traders in the beginning days, they will start with friend's capital and then they will slowly expand their business model which will be allowing anyone to invest with them with the basis of profit-sharing at some percentage. Nothing goes wrong until they manage days in profits
.