Even recognizing that some pitchers will abuse JBJ if he is always looking to go opposite field, at least it gives him a shot. The pitching is generally so awful that its hard for many of these guys to pound any part of the zone consistently. Its hard for them to keep from throwing it into the press box!
Jackie should be looking for pitches that he can take the opposite way. It is almost impossible to pull your head off, have your shoulders fly open, or get your hips out ahead if you are trying to go opposite field. It even can be less punishing to be late to the hitting zone if you are trying to go the opposite way, another problem JBJ has. All of these negative traits are traits JBJ has shown as he has about the noisiest constantly changing swing I have ever seen. In fact, if he had not had spurts of going the opposite way, he would STILL be muddling around with a .189 BA and any sort of slugging % that would matter would seem entirely out of reach for JBJ this year anyway. So IMO, JBJ should just constantly look to go opposite field. Take his lumps when a pitcher does not give him the opportunity to do so as that is still better than watching all the various screwball stuff that works its way into his swing if he is not trying to go opposite field.