I found that the pump shut off when the gas in the neck backed up to the sensor in the nozzle. The gas was going in too fast. But I don't have to lock the nozzle all the way open. If I locked the pump handle about half way open, it didn't back up in the neck. Gives me a chance to clean the windshield and fill up the station's black tank instead of mine.
I have more trouble finding a station where the pump islands are parallel to the road instead of perpendicular. I drive a 'C' and pull a toad. Backing out isn't an option. I start looking at a half tank.