[okie]

I beg your forgiveness. I did not mean to imply that Extensor Action is optional. I am merely asking, if perhaps, another way is feasible.

No forgiveness necessary for the Right Honorable Gentleman, Daryl! I get what you are saying. My "some think it optional" is merely an attempt to highlight the importance of a normal tension (artificially manufactured?) force in the swing. Few people (number growing, however) know that you gotta support what you load! Kinda like you gotta feed what you done brung into the world!
You got EA, I got EA...Bucket's got ADD! The Few...the Proud...The Machines!
Gotta go gamma ray some mac and cheese!