I haven't been able to play any line to the right of the third arrow for quite a while. Ever since I've discovered how to rev the ball consistently, my equipment has just been too strong for the medium conditions I normally bowl on. I throw about 15.5 mph, medium-high revs, more than average axis rotation.
If there is plenty of head oil, the balls I use now do well up until the 4th or 5th game - then they all hook in the heads. Right now I'm throwing a Blade Solid (thumb leverage, I think), a heat 2 pearl (4x4, also strong) and an Eraser drilled label. I am so used to playing deep lines, so can anyone suggest a ball that can hold its line when the lanes break down? Any manufacturer is fine.