Want to get them wild hogs a charging in ???
Find a hog farmer and find out when he plans on castrating his young pigs .... show up with a tape recorder and record them baby pigs a squeeling as they loose their nuts ..
Take that tape out in the wild hog woods with ya .. but you best be up a tree before you play it .. because they will come charging in wanting a good chunk of your back side ...

It's a wonder ole Knight and Hale haven't picked up on this one yet ..

One would have to check their States Reg's for public land usage. Illegal in FL...

I have found that "heeeeerrre piggy, piggy, piggy!!!" works pretty well for east Texas hogs.

Try taping a corn feeder going off. Works every time.