If you disclose on your profile you basically filter out everybody but ->-bleeped-<-s. Some ->-bleeped-<-s can be okay seeming, but I can't get over feeling like I am a fetish for them, not to mention them being interested in something that disgusts and horrifies me about my body. Most of them seem like weirdos too, tbh.
If you don't disclose till you have exchanged enough messages with a guy that you feel like you may actually like them, then when you disclose, 90% will be like whoa I would have never guessed, but I can't deal with it, and then, now that you feel terrible, they want to ask you 20,000 questions and it gets annoying.
The two above scenarios were so annoying and disheartening that I never got to option three which is to disclose after a few actual dates. Friends tell me you have a lower rate of rejection that way, probably 50-60% can't deal, but disclosing is a lot more awkward and nerve-wracking too.
The fourth scenario is probably only for post-ops, which is to wait a super long time, or just don't ever disclose. This has many pros and cons and is something that is a personal choice you have to make.
For me, being pre-op, my best candidate was a ->-bleeped-<-ish guy that found me while looking for cis girls. He didn't seem like a creep, but ultimately I just couldn't deal with my trans status being attractive to him. i do sometimes wonder if I made the right choice tho (probably not) but you just have to listen to your instincts sometimes. Now I am not trying to date anymore.