Power Meters / Powermeters (SRM, Powertap, Quarq, Ergomo, Vector, Stages, power2max, P2M, 4iii, InPower, Cinch)

Bit better- the magnet is just above the edge of the plastic cover on the back of the SRM:

That's quite high. Mine is right on the weld at the BB.

I'd experiment with moving it about but I'm lazy and I'd rather destroy it and buy a G3 instead.