It would be good to test MiHsC directly with an experiment. One proposal I made in a paper in 2013 (see reference) was to try to damp Unruh waves on one side of an object so that the Unruh waves that impact it on the other side push it along. The problem is that Unruh waves are lightyears long for normal low accelerations, and you'd have to accelerate/spin a disc very fast to make Unruh waves short enough so they can be damped by standard technology. Accelerating heavy discs is problematic.
Since then I've shown that MiHsC seems to predict the emdrive fairly well, and this implies that MiHsC also modifies the collective inertial mass of photons (McCulloch, 2016). The logical conclusion is, instead of using heavy discs, why not rotate light in a similar way? The method would be as follows: put photons into a fibre-optic loop (see the white loop in the diagram) and put a metal baffle on one side (the grey rectangle).
The photons will circle around the loop at light speed so that their acceleration will be huge and the Unruh waves they see will be of a similar size to the loop, and their electromagnetic component might therefore be damped by putting a metal shield on the left of the loop (the grey rectangle). That means there will be more Unruh waves hitting the fibre-optic loop from the right (more orange colour) than from the left (less orange) so the loop should move left. It rolls down a gradient in the Unruh radiation field.
I've done a simple calculation, and shown that if 2 Watts of power is put into the loop as photons, and if the loop has a Q factor of 10^6 then the thrust should be something like 21 mN multiplied by the efficiency of the damper in damping Unruh radiation (which I do not know, but the emdrive suggests might be close to one). This would be a kind of emdrive using light, not microwaves. A LEMdrive?
McCulloch, M.E., 2013. Inertia from a asymmetric Casimir effect, EPL, 101, 59001. Preprint
McCulloch, M.E., 2016. Testing quantised inertia on the emdrive. EPL, 111, 60005. Preprint