Yes, the strategy is to let the player at the boards take a shot from the side rather than directly in front of the net (reducing the size of the net) rather than allowing a pass to the player in front of the net who is ready for a one-timer shot on goal to the wide side. It is also designed to stop the player with the puck from getting to the front of the net as the D will attack him if he tries to go there. One problem is our D are soft and do not take the man (hit and knock him down; they go "fishing" for the puck in stead). Our D has to do 2 jobs: stop the player with the puck from advancing to the front of the net and at the same time stop the pass to the player in the low slot.
I prefer players who are "quick" on the PP (first 3 steps quickness) who can "contain" a fast forward or D man rather than allow the opponent to get around them for a high quality shot. I think Amadio defensively is OK on the 3rd or 4th line.