Thanks for the links, they help visualize the antenna element you're working with.
For commercial OTA TV and FM signals in North America, the folded dipole is oriented so that the uninterrupted element section is either above or below the section with the feed-point gap.
The Antennacraft Y5713 and Y10713 use the folded dipole as the driven element(s) in their design.
http://imagecdn-0.findnsave.com/222/2333636-420 Note that they opt to connect the center of the side opposite the feed-point to the metal boom... that is a minor variation the basic design you're using and does not change the function. Also, the feed point could be placed above with no effect on performance.
If the feed-point is forward of or in back of the continuous portion of the folded dipole element, the two halves will be slightly out of phase with each other (relative to the arriving signal). This would theoretically result in reduced performance. I would not expect the delta in performance to be of great significance though because the phase difference is not more than a few degrees.