Well, I'm no rocket scientist here but I'd place an ad asking for crew, all expense paid once on board, and leave the female part out of it. You can just reject all male applicants and go from there. It's not like you're the Publisher's Clearinghouse sweepstakes and you have to give everyone a fair chance to win! When you empathise female you give the impression that that is your primary concern, pretty much obliterating most female's interest in learning more-if you ask me. Or did you want a stupid female? See, it's all in the wording. One way might create the impression that a young lady is going to fly out to your boat at great cost to herself, only to have you and your drunken friends abuse her naivete. The other leaves open the door for a woman seeking an adventure to respond to you. and it makes it much easier to convince said woman that she'll not be regarded as merly your love unit. In fact, if you're not prepared to have just a female shipmate I'd say you'd be best off just finding a well qualified sailor who want s to go to OZ.
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.