Before you even go to the conference or event, do your research. If the event has a Facebook group then join in and introduce yourself. Google the speakers and teachers. Find similarities up front before going to the conference and begin interacting with them now.
Then when you are at the event you can avoid the awkward stalking and skip right to the “hi how are you Facebook friend? Great to meet you in person!”
When you are at the conference, set out to meet as many different people as you can... not to get gigs but rather to get to know people.
Just like when you’re on a date, sometimes it’s a match... and sometimes it’s not. Be cool with that.
For the people that resonate with you and you resonate with them, it’s ok to hang with them for a while, get their business card, and meet them later or just say you’ll be in touch.
The conference is there for you to find as many people as you can that resonate with you and you with them.
Just make sure you follow up as promised. And this pre-written script is all you need.