RE: Need some questions answered about hogs
If you just want to eradicate them shoot the sow first and leave her there. Sit and wait, the shoats will eventually show back up to see where she is. I would recommend shooting her and then getting in close and waiting with a shotgun. You should be able to get most of the little ones that way. The boar will leave if no sows around or you can shoot him later. They are loaners and won't attract other pigs, leave him for last.
We catch and tie hogs and when hunting all day we leave the tied pigs in the shade and then go gather them up when there is a break in the action. The smaller pigs are almost always standing next to the sow tied up when we go back to get them.