Rafael created a thread with a video attached, and the title to the video and thread were something along the lines of “Walter Pall’s Hedge pruning method explained”. LOL… he actually did a poor job of explaining and trying to mimic what Walter does. Walter even came in and said that what Rafael did in the video was NOT what his method is!If by "explain" you mean, "there's a guy named Walter and he does something he calls hedge-pruning", then sure, tune in.
If anything, it looks like a technique of some use if your trying to "rebuild" the top third of a tree.
Trying to grow out a deciduous tree? Just let it grow, knowing you can restart some branches fairly easy after your trunk has reached a satisfactory caliper.
But, the post generated a LOT of discussion on the Pros and Cons of the WP Hedging method. It even inspired Bjorn to make a video about it!
I reference the thread because the OP asked for the Pros and Cons, and they are discussed at great length in Rafael’s thread.