When you host a large Youth Group, there are a few students who slide between the cracks, as well as students who seem to be with you every step. Embrace the students who are leaders and are in sync with your plans. You as a leader are only 10% of the influence. Peer influence works and is what gets new students. Use those students to help you get the students to whatever event, message, retreat, etc, and then you help those students see the beauty of following Jesus!
With this said, its always great to have a few go-to students to know you'll have on board and show up. They are tough to come across, but when you do, dont let them go to waste.