If he is from field stock, he will have a strong prey drive... this is a good thing. Get some deer scent or rabbit, whatever your going to hunt.. Drag a scented cloth around the yard and get him excited over trailiing, lay a little treat at the end of the trail... Touch up his OB, get him on a CC and start making longer and longer trails... Each time he completes a trail he is praised and/or rewarded with food treat. See if he takes intrest or not.