Another good site for info is
Mach Loop Video / Photography from LowFlyMedia it includes a map of the best viewing sites if you don't already know them.
Avoid the old lowflydotnet as it reroutes to another site which contains links to viruses.
Plan to be cold on the hill sides so extra warm clothes and food helps.
I spent a great day at Cad West a few years back (it was the only good day of the week!).