16 with a parent playing 18 without
a lot of fields do not want to be a daycare facility (not saying you're immature but its a generalization that is made)
and a lot of players don't want to play with "kids" hell it took a damn long time for ANYBODY under 18 to even be remotely accepted as a player without parents being active in the sport.
Right now all you can really do is honestly lurk the boards learn post little and maybe see if at some point down the road an event coordinator will be in need of a ref, or something.
"You know what the chain of command is? It's the chain I go get and beat you with 'til ya understand who's in ruttin' command here."