I've been to a Sportair workshop and got some experience with dimpling and solid rivets but I am very interested in building a CH-650.
As I look at the construction using the blind rivets, Zenith has you use a special head in the puller to turn the flush head rivet into a dome shaped one.
My question is this...would dimpling the skins and using an unmodified rivet puller head to achieve a flush rivet be acceptable? Seems that it would improve the "bond" of the sheets (since the dimples sit inside each other) and also improve the aesthetics (which of course is subjective). Probably not going to do much for reducing drag...or would it?