Here's a technique that is worth a couple laughs...
I've got a little red cur dog that is a general nuisance to all things furry. He especially hates woodchucks, and will check every hole in a field for one. If one is home, he starts diggin' them out...
Soooo....
I jump on the ATV & drive around hayfields, while the dog is "scouting" fresh holes. If he gets to diggin' on one, then I know there is somebody home! With that knowledge, we'll be heading back to sit a couple hundred yards from that hole in the afternoon. Dog, rifle, LRF, and a cool beverage
When mr. chuck pops out, he gets popped, and my dog gets to retrieve him, LOL
This may sounds silly, and doesn't really count toward amassing big numbers. But, considering there are so few woodchucks in my AO, having the dog pinpoint where those few are is a nice bonus! And we sure have a good time of it! With the dog 'scouting' hot digs, I know we're spending our time in the right spot...
Won't be long now!!!