EAST LANSING, Mich. (AP) — Michigan State let its players choose up sides for the Spartans’ annual spring football game, like a group of kids meeting up on the playground. Arkansas State auctioned off one of its coaching spots on eBay, allowing a fan to come in and call plays.

Oklahoma State scaled back its plans, inviting fans to watch a practice instead of a scrimmage.

Spring games have become offseason highlights in many parts of the country. Alabama and Penn State announced crowds of over 70,000 this year, and they certainly aren’t the only schools with fans who will turn out in droves for their football fix. But for coaches, these public scrimmages present an interesting challenge — in part because there seems to be no consensus on what format works best.