I've built three kit boats and had a blast. I would like to build a S&G from plans but having to mail order everything definitely drives the price up. Using cheaper wood helps but I'm unsure what to try. The thinnest plywood I can locate in my area is 1/4" luan (actually about 3/16") and 1/8" birch (which looks pretty good). I think the luan is too thick to flex enough in building. Has anyone used 1/8" birch in building? If so, please share your experience. Thanks.