experiment.
once you are in your blind or tree stand for the evening treat the hog hunt exactly as you would a deer hunt, i.e. no noise, no smoking, no drinking, use the wind. if the wind is not to your liking you may move the ground blinds, but note they are setup with a south wind (typical) and are in the 'right' spot 90% of the time.
from this point it is a waiting game. the number question asked is "what time do they come in?". the only answer we have is 95% of the time they come in while it is 'dark'. sometimes you do get them coming in during 