I apologize if my last sentence offended you.
I will try again:
Eric,
Could you explain briefly in words how you apply the "3 aim line" method?
I think people mean different things by "adjustment." Let's forget about throw effects for now. With one line of alignment and/or aim, you need to place the bridge hand in slightly different places to make shots at slightly different angles (assuming center-ball hits for now). This is a fact! I think for some people the "adjustment" comes in when they place their bridge hand. For some people (e.g., air-pivot aimers), the initial alignment is "exact," but the "adjustment" for different shots within a limited range occurs with slight changes in the effective point point (or bridge length, or bridge shift) during the "pivot" stage.
I hope you don't think I am writing this to be disrespectful or arrogant. I honestly want to know what different people do when using these systems effectively. When I strictly follow some of the instructions I have gotten from Hal, Stan, Ron, and others, the systems don't work well for me for all shots within a certain range unless I visualize the required line of aim as I am dropping down into my stance (and make fine adjustments with my cue alignment where necessary). People have claimed I just don't understand how the systems are supposed to work. Please (to you or others) help me understand better what is missing in the basic descriptions of the systems. I'm not looking for long paragraphs or complicated diagrams, just a basic description of the important steps, along with an explanation of where and how "adjustments" for slightly different shots are made during the process. The description I have heard to date have been incomplete, IMO. If I follow the instructions precisely, I will be able to make many shots without "adjustment," but I will also miss many shots (e.g., those shifted slightly so the angle to the pocket is slightly different, especially shots where the OB is far from the pocket) if I don't make changes to where I place my bridge or what I use for a bridge length (if there is a pivot). I know this might sound like a broken record to some people, but I still think we have not heard complete answers to some of the important and basic questions.
Thank you,
Dave