Doug : Ive experiemented with them alot as you know.
My very first series ran them all along the wing - but subsequent knocking off over a period of time, I noticed performance didnt reduce..
Eventually with each new installation, I gradually reduced them, I ran 2 pairs ( 4 on top ) for several years, until I knocked those off also.. ending up with just a Single pair.. Moving them slightly further out away from the prop wash gave me the best of both worlds. Performance and Maintence.
I've got a few idea's as to how to improve them to blend in with wing construction but thats my secret.
Short answer : How I do them in 1 Pair configuration V toed is the best way.
I expect to see them on Riff Raff.
Incidently, if you want a set made from Carbon fiber quite thin , I can make you up a set from new carbon sheet I have specifically for this. ALOT thinner than Ply, I now make them from 0.015 Carbon sheets.
I have considered selling them premade, with a kit to allow for alignment, 8 per Kit, but I think the market is to small to warrant spending hours making them up.
Let me know..
Wheel fairings look good .