: I have done that and I find it hard to site down the keel line and
: chines on a multi-chined boat. Scarfing up my stringers with 2-3
: pieces I keep having to work to keep them straight. Different
: boards want to twist differently. Being able to build the boat
: upside down so I can see the hull better and keep it all in
: alignment should be an advantage. When I am building a new
: design it will make spotting problems a lot easier I expect. For
: example on VARDO I cut a frame wrong, apparently I laid it out
: and then cut on the wrong side of line. Once I got the stingers
: in place I thought something wasn't right but I just couldn't be
: sure. Once I took it off the strongback and turned it upside
: down I could see there was a small problem. That convinced me
: that I wanted to build with the hull upside down.

I use my strongback as above for any of my fuselage SOF's. I build them basically like a stripper and mount all the bulkheads/forms on the SB by clamping them to plywood offcuts. If they're aligned correctly the stringers just plop into place, all nicely aligned. Does it take more work? Maybe a little bit initially but I end up with more consistent chines and a hull that is fair.
=D