No I didn't get onto the scheme unfortunately.
As far as the hand/eye/foot test if you have previous flying experience, or indeed even just flight sim time with pedals I would focus most of your attention on the ball for the simple reason that because it is reversed compared to a real plane the instinct of the foot is to move the ball in the opposite direction to what the test requires...hopefully by really focusing on it though you can override what your feet naturally want to do.
I mean don't ignore the needle at all but because it moves in the 'natural' sense it shouldn't need as much conscious attention as the ball does.