I have seen plenty of mtn curs that were awesome hunting dogs...but take these dogs away from the owner and normal surroundings and they will not hunt...usually a minimum of 3 weeks but sometimes quite a bit longer...I also believe that these dogs can be ruined by the new owner...but the dog can be made to come around sooner by the new handler if he makes the right choices...we must have patience with these dogs and focus more on winning the dog over and not on hunting...the issue is not whether the dog will hunt or not because that is already known...the issue is finding a way to get the dog to trust and accepting you...Once that happens the dog will hunt...
sit by the dog when feeding...make the dog your buddy...take it for long walks...never lose your cool...the dog will know that you are hiding or containing your anger...so get right with yourself and the dog will respond positively toward you....don't force the dog to do anything it doesn't want to do...put the dog in with the pack in the kennel for about a week so it can find its place in the pack...
once the foundation is set then it is time to take the dog to the woods...I would try to hunt it as it was hunted by the previous owner for a while...take the dog to the woods and turn it out and sit and ignore the dog...when hunting ignore the dog...no petting or the dog might think you want it to hang around...
I would keep the corrections to a minimum...no real training of any sort because it probably will be recieved as a negative by the dog...just expose the dog to what you want out of it...