My average daily visits reported by Google Analytics has been around 70/day. I implemented the Universal Analytics upgrade tracking code on Mar. 11. That day, the visits dropped to ~50% of normal, and since then, it has been less than 10 per day. In my account, Analytics reports that data is being received. I'll include the code below.
There is a <script> tag which seems redundant. However, if I omit that tag, or change it to include the script type, the page freezes. If I don't include an extra tag which specifies the script type, the code doesn't validate. So I enclosed the tracking code as CData.
<!-- Google Analytics -->
ga('create', 'UA-10865704-2', 'mauitradewinds.com');
<!-- End Google Analytics -->