That's good info, Shoe, thanks for all that. I did mention the advantages of drip tape/soaker hoses and I'm a firm believer in it. Overhead spray is only really good for temporary hard to hit spots and lawns. I was in error to not mention the need to take care of people in the heat! You're right and I wish I had mentioned that. Hopefully they'll read the comments here and see your good advice.
Water hose fights are fun.
So is a horse trough full of water.
Here's some photos of the summer of 2003.