Friend had this happen on our trip a year ago with his 2011 Pro. After the tank gets down to about a quarter it would stop, restart then stop over and over again until we got off the hill. They didn't find out what happened until this year. If it has this issue, don't fill it up and take it to the dealer as they didn't find the problem.
I get the ethanol thing but it is impossible to get straight gas is most places so it is inexcusable for fuel lines to not last 3 seasons.