I’m not emotionally involved and this is not my first rodeo, you’ll probably find this hard to believe, but you’re not the first trader to say, pick a system based on profit and loss and then follow the rules; simple as that. Now since you asked so much nicer this time, let me giver you my opinion.
Your first clue as to why this is not the way to go is. . . the hundreds of thousands of traders before you, are not doing it. But what the ones who are still around, will tell you make trading personal and geared to what you want to accomplish. Use proven ideas, such as follow the trend, make sure momentum is on your side, make sure you verify with support and resistance etc etc.
In theory all trading systems are designed to put the balance of probabilities on your side and in a perfect world, might happen, but as many traders will tell you, in the real world of live trading conditions are anything but perfect or logical. There are traders who are buying and selling and not just Mr I’m new to trading. There are banks, hedge funds, etc etc with deep pockets and a lot of ammo on their side all trying to do the same thing as you; have more of a positive day than negative and mostly for them to be positive, you have to be on the other side in the negative.
Again all long term traders will tell you the same thing. Don’t get emotional, don’t revenge, stick to your rules, be patient, be disciplined. Even if you did all that 100% of the time a 100% every day, you need to have experience to be able to sit it out and leave everything in your money managements corner, as well as be able to spot an opportunity when it pops up, which is a lot of the problem with EA’s.
I didn’t answer your question with regard to the turtle system, because although I’ve heard of the turtle system, I use my own system from ideas and rules I got from other traders who have a lot in common with how I trade. Having said that, I did use someone’s system when I first started, (that was of course after I went through what you seem to be going through, (why not just use signals, they give you entry, sl and take profits). A system and rules alone will not remove emotion from your trading. Gathering the facts, looking at your options and picking the least of the evils along with a healthy dose of experience is what will do it. There are no short cuts. Like I said the 100’s of thousands before you and me, looked as well and the ones that are still around know it doesn’t exist.
I don’t differ with 1+1 = 2, that’s not the problem, in trading. The problem is 1+1 is not always the only way or the best way to get to, two. Sometimes its better to get there by: 1 x2. 4-2, 6-4 etc. I differ with your assumption that the rules are only fixed one way. Think about this you go long on eurusd cause where ever you got your information from says that’s the play. Enter x, stop loss x, tp x. 10 minutes later, the pair is still trending up and going to hit your tp. Now what? Some people would let it hit, then start over, some will use a trailing stop, even all that might change with a breaking current event. As well the other way, you’re going long, you enter, boom there is a massive candle going the other way or worse you got stopped out, when all that really happened is someone unloaded a large position. and in the next hour it would have hit your tp if you were still in the trade.
You would be right if everyone traded the same exact way, situation and experience. But again that’s not reality.