FWIW, my answer in trolley problems is usually some variant of "Well, what I would do is probably dither ineffectually between alternatives until the onrushing train takes the choice out of my hands, but what I endorse doing is killing the smaller group." (Similarly, the truth is that faced with the canonical PD I would probably do whatever the cop tells me to do, whether I think it's the right thing to do or not. Fear is like that, sometimes. But that's really not the point of the question.)