We've made our own from 2" PVC pipe and skate wheels for the dolly. Quick setup, runs smooth, cheap.

I've also never shot using track. So I'm wondering -- why are you using a track for the shoot?

Hospital lobbies are usually pretty smooth floors -- couldn't you just put the tripod on a dolly with wheels and forget the track?

Depending on the complexity of your shot, you will need one person to push the dolly and one person to pull focus, if needed. Remember that your camera to subject ratio will be affected, so a focus pull may or may not be necessary.

The next issue is the weight of the camera and operator. You should have your dolly pusher get used to the weight. your shot might only be usable once the momentum starts, as it can be a "jolty" start stop, depending on the experience of your cam. assistant.

Finally, the tracks themselves. If you are using the dolly in or out, make sure your camera person keeps an eye out for those tracks in the shot. They could end up in the shot if they are not scrutinizing the frame line.

One last consideration is to sandbag that camera and tripod down, if you can. One false move and its curtains for that camera!

Best of luck. :-)

Thanks for all the feedback.

I shoot on the 12th of November.

I'll try to remember to pop back in here and let you know how it goes.

I'm asuming you won't have a dedicated dolly grip. If so, then your key grip should be the one responsable for setting track and running the dolly. Just make sure they know what they are doing. You're shooting inside so leveling shouldn't be a problem. Set up should only take a few min. Let your grip do a few practice moves. Like with all things in film, communication is key. It is an art and can be dangerous, so be kind, have respect, and be patient.