Thanks for your prompt response and I appreciate the input from everyone else as well. Camera angles absolutely are of utmost importance. Without their proper alignments, you can receive a false reading on plane angles, etc.
I use a three camera system (down-the-line, face-on, and overhead) and have all three cameras fixed and on plane to the target. Having taught a lot with video since 2001, and one year into my journey with TGM, I wondered if there were certain places to draw lines as reference points and how they are used to better instruct students.
Again I appreciate your help, and I look forward to more discussion on this matter.