RR coil location

[circle dirt]

4 bar - 4 bar LR behind. On the RR would it be better with the coil on the housing or on the birdcage in front? Pros ,cons ?

[badfast47]

I have the rr on top and i seem to get plenty of traction.

[circle dirt]

I really thought there would be more thoughts on this. I have run both and thought that the coil on the housing was better but was looking for another opinion.