We record hours as well. I've noticed a certain "working minority" on team as well. Maybe i'm being ignorant, but some people don't seem to be doing work or being very productive.

I'd say if their blatantly being apathetic towards the team, yet still demanding the same respect as a member, then you should ignore them until they realize they are blocking themselves from participating. You have to stress to all members that people have to find their own work and it will not come to them (and usually work coming to them is honestly not the most um... exciting).

If they do not choose to learn or participate with the team, they are not taking the experience of FIRST seriously and are in turn, not contributing to the team and adding a burden to the dedicated members (dead-weight theory). Dedicated members usually are self motivated, wether its satification of building a robot, ownership of the team, respect, etc.