I do pretty much what Anita does, but I try to let them drip/air dry for a little bit (as long as possible provided they can't go run and roll in something dirty!) before I start and I don't comb at all until the final stage. I use my fingers a lot, and use a towel to block the water while blowing, on the feathers. I use my free hand to "fluff" as I go. I also use Ice on Ice on the feathers (legs, butt, tail) and chest during the final stage...which gets them wet again, because I drench them but it dries pretty quick at that point.
After 30 mins of blowing...take a break. After an hour...take a break. After an hour and a half...take a break. At two hours, take a long break...like an hour. You'll notice that he may seem totally wet again, to the touch. I swear the water oozes up the hair shaft from the skin.
Then blow for another 20-40 mins, and they're usually fully dry.
It takes a LONG time.