Big Ben,
I know what your refering to. It takes a little finess, but it will work. The part I don't like, is watching the $ meter go by so much faster, especially when the price is over $3 per gallon. It's hard stopping it on a whole dollar. I like even dollar amounts.
Also, look around at the other pumps, sometimes they have both sizes, it's just a pain in the rear moving the coach to another pump.