i use the plunge way too, but have seen some do circles on the table. what i was trying to show is that if you have some type jig mounted to the table and moving it will make it difficult to reposition exactly, then you have a problem with the hole for above table adjustments.
My circle cutting jig doesn't get in the way of the crank hole. I can cut a 36" circle before the stock gets in the way. Although I never cut one over 2 feet.