BS - Like the article said, the molded bracket on the BW added greatly to the production cost. On the v21, also, it is a modification that required much additional skilled carpentry and glasswork on a boat by boat basis. The v21's molded bracket, like the BW molded bracket, is added to the boat after coming out of the original mold. The extra cost to produce the molded bracket, probably, put production of the v21/20 to death, as wellcraft could not or would not go back to the old style transomm due to marketing forces.
When my molded bracket transom rots ( not too soon, I hope), I will probably just chop it off rather than restore it. I think I would raise the transom along the original lines to accomodate a 30 inch shaft that should by then be available in a 150 hp motor. I would leave the well so that the motor could be tilted with a bracket setback at about 12 inches, if I even wanted to keep a bracket. Bracket or not I would have an "almost full transom". Actually, it would be more "full" than my current hull.
CT, All the author is saying is what I called see-saw physics in one of my former posts. Extend the weight of the motor 30 inches back and you make the bow rise (trim). When he is talking about thrust and course, he is just saying that putting the motor farther back increases the steering or turning force on the boat (the same see-saw, just turned sideways).