What roles does a cox have at erg sprints?
Eh, pretty much the same role you do when your team is testing at your own boathouse – if people want to be coxed, cox them, and if times need to be taken down, do it, otherwise just hang in the background and watch. At CRASH-Bs there are “floor coxswains” who write down times and cox people if they’re asked to (although most people that want to be coxed bring their own so this doesn’t happen often) but the majority of the time is spent just standing there not doing much. (Of the three volunteer roles I’ve had at CRASH-Bs this one was by far the least exciting.)