All these are great ideas, but I don't live near any spot that's good for frogs, I'm in the middle of the suburbs and I'm lucky to see an American Toad or Garter snake in my yard. I think I'll just keep trying by around where I find the Peepers.

^ Also, I haven't found any set way for finding the peepers, some places are just good spots. The place that I find the most is where it's a small pond or vernal pool with no fish, and where the land is relatively flat around the water. This allows me to get really close to the water without as much chance of falling in.

They're pretty cool to keep though as long as you don't mind incessant chirping. I kept some WC just for a couple weeks to observe them before letting them go again.I read that they chirp faster or louder to try to gain more attention while mating, not sure how true that is though. So I recorded their chirping and played it back to them either faster or higher pitched, and they kept trying to beat their old voices I think.