Just curious as to what you generally use for production rates when figuring a dry stack stone wall. I'm working on my third wall project this summer (seems like everything happens in clumps) and I'm starting to wonder if I'm taking too long. All of the walls have been using Pennsylvania, Maine and/or New England Fieldstone. For those of you unfamiliar with these, they are generally flat stone with some odd or crusty shaped ones included. Fairly easy to work with. The wall I'm working on right now is about 16" tall, 24" wide and double faced. It seems like I'm poking along at a good clip, not stopping to fiddle with small fittings too long, but it still seems like I'm not making the progress I should.