Women's clothing section - yes
Women's gear section - no
Segregate the clothes and use that lovely 15x20 space to house the biggest darn women's clothing section in the entire state! That's where you'll get some impulse buys. "Look, dear, they didn't have this at Performance!" or "Wow, this is cool and it's in MY size! And there are 3 colors to choose from!"
But please don't put the "women's" helmets in there, or the pink Serfas floor pumps, or the pink pedals or baby blue cranks, or the wider "T" shaped saddles. Mix those in with the rest. Some women don't *need* a wider saddle. Some men do. Some don't *want* the uber-phallic pink floor pump. Some women have heads that don't fit in tiny helmets. Some men have heads that are too small for a "man's" helmet. Some men really like the hot pink cranks. Make women welcome through-out the entire store! The chickie on her way to buy her helmet might discover BuddyFlaps. (cha-ching!) The gal perusing the saddles might catch a glimpse of a rack. (cha-ching!) And then she'll see the Ortleib Backroller panniers and start really thinking (BIG $$$ cha-ching!)
If you isolate the women's gear (other than clothes) into one section, how many women will go beyond that section? How many will start thinking, "Hey, I can DO this bike thing! I think I'll buy my own damm Park Tool I-Beam, and my OWN tire levers! This entire store is for me, and I don't have to wait for hubby or son to maintain my bike! In fact, I'm gonna ask that mechanic over there to explain how I lube my chain and I'm gonna buy lube and degreaser and a Park Tool Chain Gang! I walk thru this whole store to buy things, so I'm not afraid to walk over to the mechanic!"
If you must put some gear in with the women's clothes, why not make it a display with a big placard "Explore the Store". Have clerks keep an eye out for women who want to see more in the store. Walk them through. They will come back, and they'll encourage other women shoppers. (Hey, I've helped other women customers at my LBS. Sometimes they get the deer-in-the-headlights look, and all they really need is to see another woman who is comfortable in the shop.)
Free "Fix A Flat" classes are an awesome idea. If you can have a women's only class, and have it be taught by a woman, even better! The best Fix A Flat class I ever took was taught by a woman. She understood that our hands weren't as strong, our arms weren't as long, and our leverage just wasn't the same. She knew some tricks other than just muscling the tire and tube, and you should have seen the confidence level rise in that class! Pretty soon we're talking derailleurs and brakes and slinging back wheels and chains around fearlessly.
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson