As Bob Macy would say...all zones look the same after a pass. So, it seems in high school...maybe not college that a 1-3-1 is most effective against 1)poor guard play 2) more effective against smaller guards 3)less effective when the offense has bigs attacking the blocks. You always know the weakside defender on the wing has to protect the block on his side and so he has to drop when the ball is on the other side of the court. Here we see a skip pass that Purdue might just shoot if that defender is deep (dropped) as we would expect against Zach.
Personally, I like a 2-1-2 set as opposed to a 2-3 just due to the opportunities around the FT line. Fill that spot with someone that can pass out of it and score either with a shot or quick drive and you can destroy it. Good high post effectiveness has them abandon it quickly. I like the 2-1-2 "wide" and starting with a pass along the side line just to start the movement (but with Zach he has to be the high post player because people are not going to chase him) looking to the high post and then catching and looking opposite. However Zach is not going to be a facilitator and so we might see more of a 2-3 look with Zach along the blocks going back and forth and the weakside of the 3 or 4 man flash to the FT line...or maybe just the 4 man is planted there starting out screening their middle man if that low. As with any zone, skip passes are always a look, because they are not on a man, but in space. Screening inside the zone produces shots as well. Attack gaps, look to the inside, look opposite especially at the high post should a pass come in from the wing and remember the 45 degree angle for passes. I can see Zach occupying the backside by moving in front of him to pull his attention and someone like Cam or Miles getting a lob weakside if someone holds the attention of that opposite FT line defender so he can sneak behind.