Great reading your article. You have mentioned and explained to my understanding what chartist analysis is and how it can be useful to traders.

One it's importance mentioned by you is that it helps to show how strong or week a trend is. This is definitely true.

It also help to show the direction of the market unless if there is a news's or cash injection into the market, that changes it temporarily.

Your explanation fo the head and should and its inverse form is highly commendable.

Wishing you the best in this contest.