How do I use the Hand Tool as default in Adobe Reader?

There is no Tools menu on my version, nor is there any Hand tool under Zoom.

I found the Hand with a right click on the page.

Unfortunately, from the next right-click, I also accidentally hid the toolbars and now I can't find any way of getting them back.

If you select the Hand Tool from menu (Tools / Select and Zoom), Adobe Reader should keep this setting when you open other documents later (tested with Adobe Reader 9).