Sometimes you just have to take a gamble in life to win. I can offer you no guarantees but my word. If you strategy doesn't meet my requirements, I will not use it, nor reveal it to anyone. Also if your method is just a minor variation of my method then again we don't have a deal. In that case you would have lost nothing because we both already know the method.
If I take your method and it makes money, I have no reason not to share with you my gain because there's always more where that is coming from. When someone can get things easily, he becomes generous. So it comes down to how confident you are of your entry method to put me in that generous position.
If I understand it correctly, you already have a entry strategy, but It doesn't perform that good, right?
How about this? You show me your method, I try to see if I can make it become better by applying a filter and If I succeed in doing this we have a deal?