I have worried that teams are onto him - not only that they are paying more attention to shutting him down, but that they are scouting him and more aware of his weaknesses, and so he won't be as effective going forward. Still, to the extent teams are keying on him, it only opens up space for everyone else. Plus, as we saw yesterday, Harrison can still make teams pay with just a sliver of an opening.
I liked the Lampard quote on Harrison yesterday which basically said that, as a winger, you sometimes have games where not that much happens. It is the nature of the position. You just cannot dictate a game in the way that more central players can. However, even if it is one of those days where not that much is happening down that side:
(1) As you note, a winger can affect the play by stretching the defense without the ball
(2) When you get your chance, you need to bury it, which he did it absolutely stunning form yesterday.
Also, to pile on to another topic which I firmly agree with, playing Hernandez/White behind him is not going to help. He is the perfect inverted winger. You know what goes well with that? An overlapping fullback.
One of the things that was interesting about the recent Montreal matches is that, when they played RSL, Wingert was playing right back. He, of course, never gets forward. When they played Portland, Alves Powell had a number of runs to the byline. Granted Montreal was rotating their fullbacks for the midweek match, but I was hoping we'd take advantage of that, particularly once Piatti was out and there potentially less need to play conservatively at RB. Didn't happen because of the personnel.
I'm not going to expect him to sustain the current run of statistical and highlight reel contribution, but I would like to see him with a real FB behind him.