Keep in mind, I am only looking to work with people that will not run away after I make them profit and then not pay me.
PM me only if you are serious, and have more than 0.2 btc that you can trade with.
You might want to use an escrow for this or a 2-of-3 multisig address. The owner would send the money to them and then they'll pay you based on the profits that you made on your trade on a weekly basis.
Why not use a cryptocurrency trading bot instead? Like
GunbotI think this option is safer instead of allowing you to access the owner exchange account. There's no need for them to expose their email and password, they just need to give you the API access.
And I cannot prove you are as accurate as you mentioned.
Yeah, showing his real portfolio/trade history might increase the confidence though.