I drilled a Complete NV with this layout. It did change direction, but not very much. It worked good when I had to play out on a drier lane. If I crawled it down the lane and grabbed it a bunch it would tip more. The reason that layout is a do not drill is because for most players it would not produce good results because you need to have a lot of hand or really low ball speed. Tommy Jones uses these drillings because for him they hook more on lower volume patterns because they don't burn up so much energy
"Now you can Bowl To Win with Hammer, Track, and Columbia"!!
Sean Davidson
Bowler's World Pro Shop