Tools are required to secure the wheels. If you will also need to use a track. (PVC pipes, tentpoles etc)
If the ground is undulating, you need wooden shims to prop up parts of the track.
You can take a leaf out of Hollywood Microdolly's tentpole design and order your tentpoles, poleclips, and bungee cord here: http://tentpoletechnologies.com/
With a bungee cord through the poles, the track virtually assembles itself.