You don't have to register at the pool, so don't see the point of having a check box
But a more visual explanation of the ramp-up time could maybe turn on the lights for some more easily?
You don't have to register, but as it says on the 2nd line of the main home page, "The pool doesn't require registration for basic use but includes indepth stats for registered miners."
So, it makes sense to register to me. Some people might be wary of registering because "big brother" is watching... Whatever...
Anyway, I was just throwing a thought out there.