I'm not so sure I agree with that. Sure you should have a reference of ball reaction and pay attention to that, but I know many players that rely on boards and can use speed adjustments at the arrow area.
The problem I have ran into area which is why I went back to arrows is when the lane is tight down lane I can't get the ball to stop "drifting" right of 10 nor can I get it close to 15 without yanking it to the left hitting 17.
I actually loved using the dots after the foul line/before the arrows however gave up when I bowled a sweeper at a old wood house that is dimly litted and couldn't see the dots until my follow through.
I also have tried using two marks at a time...arrows to breakpoint but then got to the point I couldn't hit either even though I've shot some honor scores using this stratagy.
Also have tried pin spotting like Dennis Horan and that was a disaster. So I'm back to where I started when I was a kid, using the arrows but this time I have more understanding about the game.
If I could find a way of using speed control at the foul line, I would use the Wes targeting system. Works great for him. It's hard to focus that close to me. Though in times past if I found the right line I can strike all day if I have a good ball reaction because it is so easy to hit. Then again Brian Kretzer does the same thing and he will have a great reaction some days and a very poor one other days. If anyonw has any tips playing the foul line dots I'm listening.