Nice spots. I think I’ve been to Airport X.
Any specific rec’s on sliders, Todd? There are a ton of them of them out there, thanks to the DSLR market. The big impediment to a dolly move is always the time it takes to set the tracks, so a slider is appealing.
The idea of confining myself to 3′ of travel is a little off-putting, but it makes sense – that’s often all I use even if I have a much longer section of track laid.
As for the tripod-dollies, I have never tried them, and am not much interested. It’s very limiting, and as John S. commented, you still have the nuisance of the tracks. If the camera is on its own tripod, a la Wally/Ronford etc., I can’t imagine there’s much you can do smoothly in the way of reframing, tilts/pans, focus pulls. Am I mistaken?
You can always make a dolly from plywood and skateboard wheels. You still have the nuisance of setting track, but at least you have a platform to stand on, so you can operate the camera more completely. I love the Dana Dolly, but I don’t like the acrobatics of reframing plus moving the dolly.