Colin you have put a lot of time and effort into getting the tanking to where it is. If only I had been too pissed to join Saturday night!! I would imagine that some are still reeling a little from last week's defeat against the 352nd.
Rather than seeking to change the days for tanking, I personally would find it tough to do anything other than a Saturday night as my significant other pretty much works most other nights except Wednesdays, on which I go out. Why not consider a tank holiday (Get it!?). Perhaps a couple of weeks off, time to recoup and gather up some PR for tank returns.
As you know I am not one for single crewing so I am restricted if numbers are low and more tanks are required. All said and done it has been fun up until now, I don't see why that should change just yet.