Bought me a flex-tone 500 elec.caller. Went calling yesterday a.m. got to deer stand around 8 a.m. started with rabbit calls first and after about 40min. had 2 foxes.Great seeing the caller working couldn't get a shot at either but that ok.Then seen a hog about 20 min.later so I shot it and killed it!!! Then trid calling crows within 5 min or so had a flock of 15 shot 1 out tree with 22. So ready to go back hope this time I can get one of the foxes or bobcats-coyotes I got on camera. Any suggestion on how long to call changes sounds etc.