I have the Left side full zipper too (on both hammocks I have sent them).
It makes more sense to me because when zipped up, the top right-hand side (where the 'shelf' is), is out of the way and clumsy to get at. The PERFECT spot for the rolled-up bug-net to go.
If you have the right-side as the full zip, then either your head will be pressed against the bug-net when it's rolled up, or you will have to sit on and possibly damage the bugnet when you sit down.
Left-side full zip is the way to go IMHO.
I ride a recumbent.
I like to HAM it up on the CW.
I use Linux.
I play go.
Of course I sleep in a hammock!