Tracing a Straight Plane Line

[rprevost]

Two Questions:

1. When I take the club back in the backstroke and attempt to draw a straight plane line, what should I focus on? Up to now, I have been focusing on the shaft and clubhead pointing to the base plane line unit the shaft gets parallel to the base plane line. At that point, I focus on the grip end pointing to the base plane line. This has been reasonably successful. Yesterday, I shifted my focus to my right forearm tracing the line--rather than the clubhead and shaft-- and I seemed to get more consistency with my total swing. Should it matter which I use to trace the plane line, the clubhead or the right forearm?

2. What is the "alternative target line" and how does it relate to the base plane line? What am I supposed to be tracing?

Thanks for any help I can get.