Hairy lady parts I find would put off a guy from doing oral. I have a double up partner who used to leave a landing strip until I spat a few hairs and she stopped and started shaving the lot.
It's difficult, though, if a guy wants a hairy growler. As I shave off the lot, I have about two days of acceptable level of hair growth before I have to shave again. It would take me two weeks to grow a full on bush. In that time my clients would either have to put up with long stubble or I'd have to take time off work. Best time to book me for that is after I've been off for a week or so, when I give the lady garden a rest.