If you use reason probably will never find out. The area using a boom that gives me the most problems is how little movement of the front end of tractor makes such a big difference in where the end of the boom is. Next was thought I was smooth on the 3pth hitch but again it really exaggerates any movement. Be carefully creeping something heavy down, keep hands and fingers clear.
They really can be handy. If you have remote hyd on this tractor a hyd third arm can be very good to raise or lower it. Might find it smoother than the 3 pth.