A question for all: I have been totally redesigning my sport plane project and would like to hear some opinions from the group. The basic fuselage structure is designed with 1/8" al angle joined together with 1/8" al gussets. The structure will be skinned with .025 using pop rivets. My question is would it be better to bolt (or rivet) the structure together with flat head fasteners (or solid rivets) and have an open structure while working on all the systems? Or should the skins be riveted on through the angle and gussets all at one time? I'm not necessarily looking for the open structure and I realize bolting or riveting it together before skinning will add some weight. What do you guys think?