Question for fans who write about how good of a blocker a WR, TE, or OL is
Easiest method is to see it in the All 22. I'll notice it at times during the live broadcast/game, but like most people I end up following the ball more often than not.
In the All 22, I like to look at busted plays as well as big plays to see what went into them, and blocking tends to be a constant theme in both. When watching more ordinary plays (ex. 4yd run on 1st and 10), I'll usually only notice blocking if (a) it's particularly good or bad or (b) I'm watching a specific player to get a better sense of how they perform.
Also, like others have said, there are good breakdowns available from various sources and from SR posters that highlight the good/bad on the field.