[75vs1885]

Robotics is absolutely a commitment, for the leaders and committed members at least. We, 1885, dealt with a very similar issue this year, we had so many people sign up, come sporadically and never do anything. Luckily we still had enough dedicated members so we could still work, although this required us to stay much later at our school to work. It came to the point that we just cut the members from the team who never did anything other than create distractions, and relocated the ones who had potential but who really needed to realize why they're at robotics.
I suggest tell those few kids that they need to prove themselves or they cant come. Robotics is unlike ANY extracurricular activity, so it's not ok to not live up your commitment.