It all depends on the league, the reason for the ref no show, who the home coach knows at the league, etc. Usually if an entire referee crew no shows it is due to some type of scheduling error. If a legitimate error occurred the game is normally rescheduled to the visiting teams field and the original home team pays for the refs. I did a couple U14 and above games this past weekend as a solo CR when both AR's failed to show and did not answer their phone or respond to text messages. Thank the soccer Gods that the games were one sided and played primarily in one teams half. A good referee that can run should have no problem as a solo CR on U12 and below, be able to do a respectable job as a solo CR on U13-18. I have had to do solo CR on U19B/G in the past and ran my ass off and the coaches understood there would be some things missed.