I beg to differ with specialization on 2bar shots from the back. Over the years, I've played and observed Todd, Tom Yore, Johnny Horton, Mike Cody, Michael Smith, Tracy M, Stach, Swan and countless other ProM forwards with great pulls. Yes, even Jim Wiswell and Hammer. Even though they have great pulls from both the forward and goal positions, a lot of them have push as the primary goal shot. Why? Because several of them choose the advantages of the push from goal area, which has much shallower lanes to the short AND long holes. Very few had a monster square push to the long or short, but the angles plus the option to do a dink or hard lane or brushdown pass made it a good choice. A lot of zones could cover any or all pull area shots, but to block a push from a much wider shooting area with the opposing team better sighted has to have some advantages. To hit at or past the big dot from the push area, I have seen mostly pushkicks, which sensibly seems easier to perfect than a screaming long square push.
The push is harder to square and usually much harder, yes, to keep consistent because of the oblique look at the far corner, versus the almost direct line-of-sight look at the pull long. And yes, I don't disagree with recommendations to get a nice solid pull for 3bar shots, although I've seen a lot of good push shooters utilizing the deadly straight, the spray to the split, and the hard'n'fast 3/4 slight spray long. And this can be extremely complementary to a good pushkick w/dinks series, like Jeep's, not to mention a quickset tictac crossover pullkick from the push start position.
If you have access to a table and practice time, do not neglect your possible 2nd or 3rd options!! Look at the majors in baseball, and observe what makes a great pitcher. None of them have only one extremely dominant fastball or curveball or other pitch, but the great ones have 2-4 "money" pitches. Same as any game.. the more weapons you have, the better chance to score! If a football quarterback has 2 or more (note that one will usually be the more dominant) receivers, he is most effective in passing. In soccer or hockey, the line with 2 or all deadly scorers will often dominate a line with only one "superstar".
I would even say a push series with the option to push kick, utilizing two shots, is superior to a concentrated pull series from the goal area. Executing, clearing and Hiding, a push shot series is complementary to the push kick.long. So is a pull or other series like a tictac or slowrolling crossover with the option to push or pull or push/pull kick. It aint the shot, but more how many reliable ones there are to shoot or clear or pass with. Any decent opposing team will, unless they lean over too far and their brains fall out (I swear I've seen this too many times, too!) adjust much more quickly to a limited pull than 2-3 possible release or trigger point shots from the goal area.