Just curious...Other than the obvious and personal preference, is there any benefit of a single side compared to a double side?
Have made both. I see no benefit.
Although I don't make a single side, I personally like the cant on the lid created by the off set screw hole. Seems to always be at the right angle, especially for those beginning to use a box call.
I'm glad you asked this question. I've never played a one sided call and was wondering the same thing.