Well. If one has a profitable strategy why should one work for a prop firm. Work for oneself. If there is shortage of funds rather borrow funds give interest, make more money and work for oneself. If it is about experimenting with others money to clear our concepts and find out if strategy is profitable then prop firm would be a good option. Am i missing something ?
When you are under the pressure to make money which you will be in if you are borrowing money on interest you will have no patience.