I totally agree with HUmar104 on that. I was an assistant FTA at Florida and it went perfectly. All matches on time, no field "problems" nor complaints. Each team had control of their own situation with pairing and couldn't blame the FMS for anything. For those teams that had problems with their FMS, there was one one field that could be used.
For Championships, and transporting from the pits in the GWCC to the Dome, I recommend getting something like a rolling cart (see
http://www.target.com/3-Tier-Rolling...%20cart&page=1 for an example). Something that can carry your laptop and the robot and possibly a small tool box for carrying zip ties, batteries and the like.
As for the coach, he just had to push the button (Start/Continue) twice. And then he could help the team with the strategy during driver control. There was power for the laptops on the field (which FIRST will provide at Championships as well). There was never a problem with the coaches not hitting the button at the wrong time.
This option will be great for all teams in getting them on the field and playing all their matches on time. Hopefully, we will get more than 5 matches per team, but I haven't heard what that will be.