CadeRMy poachers are centre and I barely ski switch and the kick ass, I'd go centre
Not saying they don't kick ass like that I'm just saying your preference is not the norm.
Sure you reduce swing weight marginally but if that's the goal I could argue that you should mount at the point where tip/tail mass is balanced which would likely be in front of the center line since the tip is wider than tail. And that is pretty much unheard of...
It's not wrong to mount anywhere on the ski if that's your preference, I just think that it's generally more preferred on this type of ski to be a bit back from center. So there's a better chance that's where he would like it.