Farmboy
MEMBER
Middlebury, VT
I actually have an experiment in mind when I mount my GY26s that's along those lines, Farmboy.
I hope you get good results.
I try to envision how a tailcone cupped to mount close to the tire trailing perimeter would help reduce the drag, without being in the way, adding too much weight due to the structure needed to hold it vibration free, and I don't see enough benefit. But if a simple fin would make a difference....the 3:1 ratio may be a hurtle.
pb