I spent the best part of 3 years on internet dating sites and struggled with the same questions and same problems as you have.
From experience I would say about 80% of guys dont even bother reading your narrative. They look at the pictures and if they like what they see, will send some kind of message (one could write a book on the topic of messages alone).
I tried all the options, disclosure, non disclosure and found it safer to disclose in my narrative and my first line of questioning would be, "are you sure you have read and understood every word of my narrative?". At that point most would disappear.
As in your experience though, most of those that were interested, were only interested from a sexual curiosity perspective or some weird fantasy about a lady boy. Many were straight forward about exactly what their fantasy was. It was really frustrating to say the least, I am a hetro woman, looking for a hetro guy. I was born with a birth defect and there was no chance of me ever using it for the things they wanted to do with me. With every new person I chatted to, it became more and more evident why they had contacted me.
Its a double edged sword, and one has to take the time to sift through thousands of people, and those that seem genuine and worthwhile, you have to take the time to meet, in a public place and make sure he pays for dinner! Eventually with persistence I do believe each of us has a special someone out there. I did however make a few friends who were just that, friends.
Thankfully though, I eventually met my man in the course of normal daily life. He noticed me and he made all the moves, called me, invited me to dinner, and I told him my story on our first date. He never knew anything about trans people, but was intrigued enough to ask questions and he actually went home and did research, came back another night with more questions and I could see this man was genuinely interested to the point that he educated himself to make an informed decision about actually persuing a relationship with me.
He is not anything like the internet guys in any way. He sees and treats me like a normal woman. He respected my boundries in terms of my body and we have lived together for more than a year now. We combined our lives, children, families, just as in any normal relationship where 2 people have made a commitment and decided to spend their lives together. Yes we have our regular issues as any other couple does, but he made my journey of achieving surgery his journey aswell. He has been there every step of the way, through all the ups and downs, and together we eventually made it.
I am one of the fortunate few, I know that and am grateful for my blessing. We all know there are no reference books or guidelines, but with each individual story, and individual experiences shared, we can draw on eachothers collective knowledge.