I was a Motorbike Marshall/Medic. (Blue BMW).
I started my patrols at 7am with the first riders; with other marshalls starting throughout the morning with each group. Our mode of operation basically tries to be where the most riders are and/or where the most riders are in danger (on this particular ride it was hypothermia, descents and the latter part of the course where we knew people would be struggling).
By the time my particular patrol reached the summit of Hotham I was completely soaked (I made some poor clothing choices). I was in danger of becoming hypothermic myself but luckily one of the other marshalls was able to lend me a dry jumper. I placed the inner waterproof liner in my jacket and my mood improved no end
However my bottom half was still soaked. I completed my patrols at 7pm utterly shattered. Whilst I obviously didn't physically exert myself as much as the riders, riding a powerful motorbike in and out of cyclists on cold, wet winding roads for 12 hours tends to leave you mentally drained and in danger of having an accident. I narrowly missed becoming a statistic in the last 15kms when I cut a RH corner too much and nearly met the front end of an oncoming car. That woke me up. I finished early compared to some of the other marshalls who were still out on the coarse past 10pm.
I've been in this role for 3 BV rides now (RTB, GV, 3 Peaks), and this was by far the most challenging (technically as a motorcyclist and endurance wise due to the weather) that i've experienced. It was the least challenging as far as first aid goes. We knew before the ride had started that there would be very few riders who would come off (due to the general calibre of riders and the weather (when it's poor weather people are more careful)), however the potential was always there for other types of problems (exhaustion, cold etc). I saw no actual cases of hypothermia, but I understand there was at least one serious case at the final rest stop, im sure there were more.
My WTF moment was a rider after the first decent, in sheets of rain, who waved me down because she didnt know how to fix a flat. Seriously.. what are you doing on this type of ride without that knowledge...?
As far as being medically prepared to cope with problems I think the arrangements in place were more than adequate. For instance there were 3 ambulances following the route, and Rural Ambulance coordination sitting with route control. This is more emergency services coordination than is in place for the great vic where the frequency and seriousness of incidents are far greater. There were also numerous doctors, nurses, first aiders, evac vehicles, and handsome motorbike medics at many places throughout the course at all times.