Well . . . it depends. If you are a member of p411, and maintain a couple of okays a year, I suspect many ladies will see you. Getting the first couple of okays is going to be harder, of course. I, too, tend to be pretty picky about whom I see-and I tend to repeat after I find someone I click with--which results in very low counts, so I feel your pain.
Even within a pretty specific type, you'll usually be able to find one, possibly two people willing to see newbies. (Or pick someone who is really close to your type.) It can't hurt to try an email, just be polite even if they say no. You may also wish to offer to do additional screening if they want (assuming you don't mind providing some personal information).