True, the 3 rail with inside, played via follow, stun and even sometimes with a bit of draw (depending on the shot one plays to it), can be quite predictable and a great way to get back into line.You have to learn this shot because it comes up over and over in the beginning shot of a run or to get back in line. Shoot it with the object ball near the spot and the cueball midtable. Cueball spins off the middle of all 3 rails and comes to the middle of 4th rail...you cannot scratch. You just overcut the object ball and the collision induced throw and spin from using inside English bring the object ball to the hole. All it takes is practice and it's automatic.