Off season drivers: HELP

I need some help with something. Our team competes at the annual Cal Games off season competition each year. Our team had a driver practice today, where our lead mentor had us pair into groups (since some of our drivers last year have graduated), and practice driving.

Bottom line: He is under the impression that it's only an off season event, and wants to have everyone drive at the competition. He says he wants everyone to have fun.

I disagree. While everyone should have the opportunity to drive, it should not be during a competition. In the non-competition time, when the club stills meets, then I feel that everyone should drive. Not only does it make your team more consistent at the competition, not everyone is a good driver. My idea is to have 1 or 2 drive teams (a main team and a back up team).

So the question is: Which is the best option: Having everyone drive, or to have 1 or 2 drive teams?