Good idea, elenorcoli! And thanks, Dr. Geep; that definitely works, too. In fact, it might be a good idea to try the latter trick on the Dolly camera, using the parenting to act as the "crane" and retaining the rotation function of the camera itself.

Thinking about it, I could probably also use "Point at" for something like this, using the dolly controls to move the camera and letting it automatically follow its subject.

I'm still a relative virgin at animation, but I've chosen to tackle a major animation project, so I'm kind of in "crash mode." ;)