Good point about Tapping out, the Americans facilitate this well by having buttons for each team, press when ready to start and again when/if you tap out. Makes sense with so many spinners about.
(This may have been a Battlebots only thing, but they still have a ref on each team by the looks of it at RoboGames.)

John also makes a good point about having a split opinion, that's ok!
Some people want to fight spinners, some don't. Like wise we shouldn't dispell the idea completely or force people to fight them.