Make it a joke...
Say a friend bet you couldn't, so get them to do it. Surprise them by calling in a couple of days, just after they've had time to place it out of mind. Don't call them all! Women talk, remember.
As funny as the idea of handing out hundreds of your cards sounds, I actually tried this at several busy malls. In addition, I placed cards on the blades of each windshield. I've also posted ads for myself on hospital bulletin boards as they tend to have many females workers. Next, I locate the "smoking area" for the hospital and hang out there. Usually, every 15 minutes there is a new stream of smokers to talk to.
You've really got to get numbers going for you. I just realized tonight how many times I AM now the one who ignores most calls I get. I can remember when it used to be ME desperately calling and frustrated no one would answer. I'm probably not much better now than I was then, but I do have more numbers going for me since I fearlessly and shamelessly spam myself to any hot chic within reach.
Just some ideas.