Sail tracks can be made of plastic or metal and can be obtained from a variety of places and is relatively inexpensive. We sell a white plastic sail track in lengths to suit the installation of the Jayco Storm Covers.
You can view it here: https://www.campsmart.net.au/white-plastic-sail-track-2-x-2m-lengths
However, you can purchase sail track from most Bunnings in aluminum finish. You can view it here or google "metal mate sail track" to find a local supplier.
Other places you can source sail track include:
Caravan repairers, sign makers, boating shops, and canvas trimmers
The installation of the sail track is a relatively quick and easy job and will require - silicone sealant, self-tapping screws, or pop rivets. If you are not confident to install a sail track most caravan repairers and canvas makers/repairers/trimmers should be able to assist.
This youtube video offers some good tips