I usually walk over to the hog, look at it, and say, "Yep, it's dead." Then go get a cold drink. If I want to actually eat it, I like the ice method. I will often just fill an ice chest with water and throw the quarters in. Then once I get home, I'll drain it and fill with ice and let that sit at least overnight, but sometimes up to three days continuing to drain the water off and refill with ice. It really does take a lot of the gamey-ness out of it and then it cooks up really well.
Someone suggested doing the same thing with milk, but I reminded them how much milk costs.