If you like gay men and just want hookups, Scruff and Grindr would work. Scruff particularly has a more mature demographic.
You might have success on Craigslist, but be cautious.
There are also sites like Adult Friend Finder which are more sex oriented than the dating sites, and you would have the option of listing yourself as either 'transgender' or 'male'. Transgender will get you more attention, but make sure that you clarify in your profile that you are FTM.
First impressions are the most important thing, even more than whatever your downstairs anatomy is. make yourself attractive and appealing, in both body and mind, and convey this in your profiles - in your pictures as well as profile text. You'd be surprised how many people, when attracted, are willing to look past it.