One thing our area as done for a while for the beginner level kids is to have "Rival Nights".
This is hosted by the area schools and we do mat side match ups based on age and weight. We include all of Adams County, Wells County, Jay County, New Haven, and Parkway Ohio- along with any other kid that has an USA card.
The HS kids officiate and we push though as many matches as possible just to get them match experience.
Since we have done this, I feel we have done a better job retaining our beginner kids. Our club numbers have increased significantly over the last 7-8 years.
Once those kids have a couple years under their belt, we move them to the duals team, individual events, etc.