naji...While I agree with your post below, NOBODY uses a measured 6" bridge. The average is 10-15". Most people don't know. I had a student today who estimated his bridge at 7"...it was 12". With a true 6" bridge you'd be standing on top of the CB...although you might use that short of a bridge on some finesse speed shots.
Scott Lee
http://poolknowledge.com
Scott Lee
http://poolknowledge.com
The real eye opener is to get the tip to hit low enough, short 6" bridge is perfect, you need to know how to power it the right way. A good instructor can show you how..