I'm doing a couple of hillclimbs in the next few months, and while Mt. Washington won't let you ride down some of the other/shorter hills require that you do.
having practiced on a steep but short local hill, I can sense that this is going to be more fun for me than for most people as I probably outweigh them by #100.
the descents will be controlled by the organizers and slow-paced, which pretty much means riding the brakes most of the way. or pulsing.
my current plan is to put a nice set of koolstop pads on the front and a crappy pair of new pads (i.e., the ones I would replace with koolstops) on the back. then ride the back brakes most of the way down the hill, and occasionally pulse the front ones if I really need to stop in a hurry.
alternatively I could put koolstops on the back as well, but my guess is that I'll just grind through them. don't really care about grinding through the stock pads, and not too worried about squealing.
yet another possibility is to ride my bike with a drum brake in front, which would solve all of my problems, but it is SO HEAVY (also has a heavy-duty rim) that I'm reluctant to.