I dont use a hog call
all I can say if the rach has been hunted hard then the hogs are going to be smart
probably the best way to go about it is spot and stalk
If they have feeders set up and they have been hunted hard then the hogs wont come in till after dark.
with spot and stalk just make sure you have an escape route ie a tree you can get up in a hurry them suckers can put some serious hurt on a man
I know I have a 12 inch scare on my right thigh from a hog