Hi Wingnut, I tried the little courgated nails but quickly realized why they went the way of the dodo. I used either t-88 epoxy or the Kreg pocket hole jig
http://www.kregtool.com/Pocket-Hole-Jigs-Prodlist.html When I used the pocket holes I also use the t-88. I have been using t-88 and Gorilla Wood glue throughout the entire project with some liquid nails heavy duty (outdoor stuff) in some places.
I am using 1/4 inch on the inside and plan to use 1/8 inch and filon on the outside. I was planning to paint the outside but the wife said no, use filon it looks more professional.

The plywood skins are attached with a mixture of t-88 in higher stress areas (junction of the lower over-cab spar and verticals) and gorilla wood glue. I am using a finish nail gun with various length nails to attach them. In areas of higher stress (attaching side walls to wings, etc) I am using deck screws along with enough glue to get a good amount of squeeze out.
I have done some testing on the three glues I am using and they all seem to pull about the same amount of wood when forced to the breaking point. If she falls apart I have no idea how I could have done it any better.

Everything "seems" to be pretty solid.