Try building a reputation by creating a thread listing your daily trades as an example

Day 1: Btc/usd
Buy at: xxxx
Sell at: xxxx

List down your daily profit and combine it in a month and we'll see if you can really do a +25% a month and according to Parodium even though you can't transfer funds to any account you can trade irresponsibly, ypu can either trade with coins that has a low volume or liquidity and can do harm to the investor.

You can just create a premium groupchat wherein they can follow your trades. (similar to trading signal) but of course when you prove that you are a reliable trader.