@Jennifer - no, having a chaser single you out doesn't mean he's looking for another man. There are puh-lenty of gay bars full of men. Some of them are pretty darn manly looking men. Muscle men, regular looking dudes, big ol' bears - you name it, there's a dude out there for you if you are looking for a dude. There are, I'm sure, gay guys who really like drag queens - but that's mostly not who hits on us.
No, many of the guys who hit on TGs are chasers - looking for someone who isn't quite a man, but isn't quite a woman either - the best of both worlds. And while I'm told that some of these guys can actually be very nice, and appreciate us - especially us pre-op TS girls - my encounters with them have been scary, dangerous, and quite unwanted.
edit: Clarification - I'm not straight. I'm a queer woman. Make of that what you will. Unwanted attention from a man, particularly if it's aggressive and scary is not a pleasant experience.