I trim the area first with clippers and then use a disposable razor in the shower. It feels great to keep the area hairless and it seems to be more hygienic as well.
Ditto that... I have very light/little body hair (not quite hairless, but almost), so I only shave between the cheeks.
I've been shaving with a disposable razor (Gillette Mach III) for at least five years, including my balls, base and lower shaft of my cock, and the crack of my ass. I generally shave every day, at least every other day.
Before a date or encounter, I shave with a razor, and follow up with a Feather Touch micro-shaver to make sure I am completely smooth.
It takes a little practice, but I almost never nick myself anywhere when shaving. The warm/hot shower and lots of Lubriderm, shaving gel, or your favorite soap or shower gel work great. Take your time, and if your shower doesn't have a built in step or seat, get a portable shower step/seat - having one leg up makes it way easier... I learned this from my girlfriend.
Being smooth I am always clean and fresh, no jock itch, other itching, or skid marks in the drawers... I love it, so do my partners.