Most stoves can boil water at a lower setting than the hottest super duper nuclear melt down setting on the dial.
If your dial goes to say 8, put it on 7 or 6.5 no reason to blast it wide open, well you can but expect boil overs.
I've never come close to a boil over on the stove or propane. I do full 5 gal boils in a 7 gal pot and dont have issues. Heat control and paying attention go a long way.
*** Possum Trot Brewery ***
Beer Primary - Butthead Belgian
Beer Secondary - Belgian Tripel
Bottled - Big Breakfast Stout - Belgian IPA - Butthead Belgian White - Redneck Red - Moose Drool - Dirty Dubbel
Mead Primary - Nuttin
Bottled - Strawberry Trainwreck - Orange Spice - Blueberry Trainwreck