Coaches, here's one way to do it. When you offer a spot to a kid, let the kid and her parents know that the offer is good as long as there's still a spot open on your team. They must know this up front....tell them at the beginning of the tryout and have it in writing. That way you can still try kids out and you are not left hanging by any player. Only give offers to players you believe are talented enough for your team. Let's say you have one outfield spot open on your team. Three kids come to the tryout that are good enough to be part of your team. After tryouts, mail or text the parents of the three kids that they are offered a spot on the team as long as the spot is still available. The first one that accepts gets the spot. If for some reason a player backs out on you, reach back out to the players you offered and state that if they are not yet committed you have an additional opening. Wait a day or two, and if you get a no or they are already committed, try some more kids out and start all over. This way you are doing everything possible for your team while giving tryout attendees an opportunity to accept an offer to play for you providing a position is open.