You do not have to double-click on bookmarks, a single click is sufficient.
As indicated, a bookmark can do a lot of different things - going to a page view is only one of many possible actions. Here is a list of the canned actions you can assign, in addition to that, you can do pretty much anything by using a JavaScript action:
Also, a bookmark - depending on what the action is - may behave differently in Adobe Reader as it would in Adobe Acrobat.
Karl Heinz Kremer
PDF Acrobatics Without a Net
PDF Software Development, Training and More...
http://www.khkonsulting.com