Tyler, would you recommend a mobile unit for the Mendo Rally (currently have an HT, VX-6R)? If so, I'll bump that up on my list of to-do's.
I definitely would. You don't want blind spots, especially if you are going to be driving the course. Usually the rallymaster puts the HT guys on the stations closest to service, where net control is located. If you are on the course they really hound you about knowing exactly where you are, and they REALLY do not like it when you are off comm. Last year they even made us report our mileage, which did not work, as everyone kept forgetting to reset their trip meters and had different sized tires. It was a little funny when they kept getting three different numbers from all the sweeps, who were in the same location.
One of the jobs as a sweep is to keep net control updated at all times. I had a co-driver as a dedicated radio operator, so I could drive/recover people etc. He was almost constantly at the radio, because net control kept asking for updates in the middle of recoveries. They are very strict about their HAM protocol during the event, but it is fairly easy to get used to.