Not to be a smart alec, but it'll be the water that has all the plug pulling boats in it. Do a drift saturday afternoon in december or january and look for guys fishing. You want the ones with the intent look that glare a little bit when you get close to 'their' hole. That'll show you most of what you need to know.
Don't be afraid to just pull in 100 yards above somebody, and fish behind them. Watch what they do. Do the same, or do something slightly different. If he's going down in the middle, go down right next to the bank, or the reverse. Eventually one or the other of you will catch a fish, and you'll learn something about what plug water looks like. You can easily catch fish behind other boats, particularly if you've got a little something special down there. If you know they're running bait, run plugs, or vice versa.
Now, for a description, it's water that is slow enough so that you can hold the boat in it without getting a coronary, fast enough to hold fish, and long enough so that you can get the plugs set out and have water to still fish. Preferably it doesn't also have a bunch of bank fishermen that are fishing the same area of water. If a bank fisherman can hit you with a rock or his sinker, you're too close to be plugging that water.
Does that help?
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