I rather agree with DeanH here: one should keep in mind that profiles are supposed to be interpreatations, not alternate photography.
I've been working on a Stampe SV.4A for a friend. He couldn't send me photographs of his bird (F-BXCD) at first so I had to use shots of other aircraft. When I sent him the blueprint I'd created as a basis for the profile, he wrote back with dozens of corrections. It seems that nerly every existing Stampe is unique in some fashion, sometimes with rather substantial differences for each a/c. Therefore, even photographs are tricky to use.
I think that there is a point when one should say "that's good enough" because there is no end to perfecting the thing...