One thing you can do right is get to know your kids.
Show enthusiasm about the sport...
Next get the word to the kids on the team to look out for recruits...
In 7th and 8th grade the guys from my high school kept bugging me about going out for cross in 9th grade. The thing was I was a HUGE football fanatic and didn't want to give up the dream off being a big football player.
I think ultimately I decided in ninth grade to go out for cross-country because of the persistence of the guys from my high school. Although it was really tough to give up the football dream I gave it up and I'm glad I did. Even though I love football and it will always be favorite sport to watch I'm glad I chose to run cross-country.
I received some small awards in hs and college and now
I'm a volunteer assistant coach at a university and plan to pursue college coaching in cross-country and track. I'm glad I made the decision I did.
Ultimately you have to get the kids to talk to their friends and be persistent.
Like me there is a lot of kids that want to be the next barry sanders or jerry rice, but you have to find someway to get through that.
I also think a good thing to do is look at your wrestling team. Wrestlers often make great runners (especially at the lower weight classes) and they know what it takes to make sacrifices. I'm sure the coaches would welcome you getting their guys into shape before the wrestling season starts.
Also I like the idea of running with your kids. If you are able to do it. Kids really respond to coaches who go out and try to do some of the things that they are doing. Sometimes you have to be a coach and you can't run with the kids all the time but making an effort to run and workout with the kids on occasion really helps.
If you are not able to run with your kids go out and read to make up for it. Even if you are an ex-runner read as well and become as knowledgeable about running and related topics as much as possible.
I hope this helps and good luck....