As a 3-under shooter, here is what I find to be the bad. One, most bows you buy out there are tillered split, meaning you will have to raise your nock point 1/8" and that may not sound like alot, but if you switch back and forth between different bows, your POI can change. 3 under generally is louder than split.On some bow, you may not be able to completely get rid of fishtailing with 3 under. Depending on anchor, you might have to tilt you head more with 3 under. Its impossible to pinch the arrow shooting 3 under. And it feels good 3 under.

With split your force is generally equal behind the arrow. If you have two nock points as I suggest your nock is not being pinched like 3 under. Bad part about split, is arrow is further from the eye and head tilt may become more critical.

I started out 3 under and would have a difficult time changing now. It works however well.