I'd agree with your last post - the gold price fluctuating a few dollars shouldn't make much of a difference at all - the viability of mining is about the same, at this very early stage.

There is a bit of an effect generally in that a high gold price gets peoples' attention on gold stocks.

I wouldn't spend 2 milliseconds considering the gold price in my KXL decisions.  Don't even bother looking at it (except to know gold is going up up up - as the US $ tanks, the price of gold in real currencies like C$ or Euros or Yuan doesn't change that much.

Better to consider meters of mineralization / cedartree