The reason that Pa rescinded the law against shooting cubs was to prevent making violators out of honest sportsman.... Unless you are very famliar with bears, it IS often difficult to judge the size of them under hunting conditions...A lot of guys were shooting bears that they thought were legal, only to discover they had shot a cub..
When combined with the methods often used in Pa, such as organized drives, the critters are traveling fast and it becomes even tougher judging size...
I'm not going to even attempt to argue the pros and cons of baiting, but one advantage of baiting , which is legal in many states for bears, is that it gives the hunters more time to evaluate the size of the bear and to determine if a large bear has cubs with it..