Our group, sledbunnyracing, doesn't have that kind of age spread but like many has many mature riders (mature is a nice word for getting older) who have teenage (or older) sons and daughters that ride with us.
In our case we struggle to keep the mountain rides at 8 people (more manageable).
We started riding in the mountains in 2000 and love it.
When we started the sled were older and the trailers open two place's with decks. As we have become more commited we have graduated to mostly brand new Doo's and a covered trailers...life in Alberta is good.
It's all about hanging out with our buddies, kids and the people we meet.
I'm the guy with the camera and this has become such an event that we started our own web site
www.sledbunnyracing.com just to post photo's
Mountain Riding Is The Best!!!