Originally Posted by terrymorse

I have no experience with these, but a tandem with a kid back adapter looks intriguing:

http://www.precisiontandems.com/artkidbackinstall.htm

I see them around town, and the stokers look like they're having a good time. Seems it's a gradual process: start on the kid back, then graduate to stoker, then graduate to a single bike. And on longer rides than the kid is comfortable on, the tandem's still available.