Well if you put your ID on the channel board and then got shoot down by someone who got there after you "Well YES by all means he should have to pay" i think there might even be a AMA LAW about something like that stating he is at fault....

But if it was'nt a AMA Certified Field with no Radio Board just some club field with limited rules "he can refuse to pay and there is'nt a thing you can do"

goodluck