I had a random thought after an very interesting response to a thread I posted here. Shaun Stanton was passing on some useful info on "Vortex Ring States" and related issues and mentioned the influences on Flat 8s and Coaxial setups. Which as I mentioned further in the post an corroborated by Steve Maller had lead to some head scratching thoughts ... So here goes one of my head scratching thoughts ... As I understand it, converting from a Flat 8 to a Coaxial setup increases the stability of a unit during flight especially during descents compared to the Flat 8 ... one of the reasons being the elimination of the spoon effect caused by the surface area created by the tip to tip props. So I pose this scenario ... What would happen is you kept the 8 booms and every alternate motor on a flat setup, you rotated 180 degrees to face down, then making sure the prop and motor spins i the correct direction. Now you have a displacement of the props breaking the spoon effect somewhat. Will this work? How would this handle? could it be an in-between solution between an flat 8 and a coaxial setup? Just a random thought to see what others think?