Wrong! You have to play the part. Take a duffel bag or a knapsack and you'll fit in. Pack a laptop and a book. I have my some medical school textbooks from an ex. You are acting- surf the net but make it appear like you're studying.
Set your eyes on a lady by herself. Thursday to Saturday evening's are best. I usually ask the lucky lady to watch my stuff while I go to the washroom. That's how to make the connection that she thinks nothing of and feel her out. Sometimes when I come back I say, 'You look familiar! ' and then make sh*t up... For instance, 'You're in my Monday morning session, right?' and play myself off as a young prof and make up a course (whatever comes to mind!). Use your imagination and have fun!
Next, find a way to strike a convo when it looks like her mind is starting to wander if she shows potential. You'd be shocked at the success rate of getting them to join you for coffee. It's all up to you from there. Be a good listener and respectful. Have a few jokes up your sleeve. The mission is to get her number and gain her trust and interest.
There are many lonely ladies here. It's truly a field of dreams!
Yet it is probably better that you don't believe me. Less competition for me!