Couple of thoughts about Creston. First, didn't know their QB was a German foreign exchange student, that is very cool. He threw some nice deep balls, but I wander if he has seen much American football before coming to the states.
Second, Creston's line is the epitome of corn-fed Iowa boys. My goodness, I have never seen so much size on one high school team. They are not only big but tall. They had several guys at the 290+ range and many were 6'4" or taller. Never seen anything like it. When they would line up in the "tank" formation which was a wildcat for the RB with about 2500 lbs of players in front of him just running forward, it was a sight to see. He would just tuck in the middle of them and the whole pile would go forward for 7-10 yard gains even when it looked like nothing was there. They don't pull lineman at all, just go north-south, which certainly works for them. Have to agree with oonfoofoo's thoughts earlier that the way to deal with them is crash from the edges. Pella's D had success with that. Schiltz gained over 300 yards, but over 160 of them were in the 4th quarter on Pella's subs. He had in the 90's at halftime and was contained pretty nicely.
Lastly, they have almost all their players back next year. They will gain lots of yards and score lots of points, but their defense is what is going to make or break them. They were not stout on D at times this year, including last night. They have difficulty dealing with speed. But, in saying that, they will be very, very good. Schiltz may run for 3000 yards next year and may carry the ball 500 times, and I'm not exaggerating.