I have tried it and it does not work for me so I assume I'm not doing it right.
Dave Nelson
Dave,
I've been shooting since the 70's and learned the traditional ways of aiming and stroking like many others here on AZ. I was almost PO'ed when I heard about some of the new (or old

) aiming systems out there that take the place of what I'd worked so hard at for so many years. Being skeptical I decided it was my duty to prove them wrong even though I had worked with guys like Gerry Kanov and Don "The Preacher" Feeney in the past and we had discussed these lunatic fringe aiming systems and their geometric possibilities. I learned the 90/90 system and much to my dismay I starting pocketing balls.

Now what do I do? I'm trapped between tradition and a leap of faith. You have to make your mind up to let 90/90 work for you. Do not second guess the setup is what this paragraph is saying even though it feels wrong. Once you get past that here is a good starting place...
The nice thing about the 90/90 system is you can adjust for angle and distance without changing your bridge distance. If you change the length of the bridge your hip pivot changes. The bridge distance has to be consistent. Only on shots where the CB is very close to the OB will I shorten my bridge to feel the correct pivot.
I learned to vary my bridges for speed and accuracy on each type of shot as we all do as we advance in ability. In 90/90 you can still do this, but first get your aiming line and then adjust your english and stroke length. It's an extra step that I do because I can really concentrate on my pose since I've cinched the ball.
The easiest place to start is with shots
more than 2 diamonds apart. These will be consistent when used with an edge to edge (ETE) or what is called by Ron V a '90/90' setup. This setup is for a shot less than thirty degrees (slight or thick cuts). For a shot to the left you aim left side of the CB to the left side of the OB and hip pivot. If you have a shot to the right esrever the snoitcerid. :wink:
If you aren't pocketing balls you may be too close to the CB before your pivot. I use a 12" bridge on all shots. When the ball is on the rail it gets a little tricky, but don't change your bridge length. Remember...the 90/90 setup is for shots more the 2 diamonds apart. If you are
less than 2 diamonds away or the cut is more than 30 degrees a simple adjustment or aiming point is made. I would start with the 90/90 setup and then move to the adjustments after my bridge and hip pivot were comfortable.
Hope I turned on a light for you to papraphrase Spidey.
Best, Mike