Dave,
I was hoping others would chime in here with there info. Bass gender is set at birth 50% male and 50% female (normal). However a male can be converted to female when subjected to estrogen at an early developmental stage. These converted ones are the ones that you use to get all female offspring when crossed properly.

Bob did you see my question? I think you answered it though since you are sexing the bass yourself. Still no source of buying females?

Greg Grimes
www.lakework.com