Right, but this does not address the question posited:Just keep an eye on it and drop the power/flame a little until the hot break subsides. It only takes a few minutes. Then let-r-rip.
http://howtobrew.com/book/section-1/a-crash-course-in-brewing/brew-day8. Watch for boilovers. As the wort boils, foam will form on the surface. This foam will persist until the wort goes through the "hot break" stage . The wort will easily boil over during this foaming stage, so stay close by and stir frequently . Blow on it and turn the heat down if it begins to boil over. Put a few copper pennies into the pot to help prevent boilovers.(See Chapter 7 - Boiling and Cooling for more info.)
If the pennies work to help with boil over and you are looking for something more resilient than the copper pennies, you could try using a stainless steel scrubber. It should provide nucleation sites like a coin, but without the chance of adding too much zinc when the copper wears off.Copper pennies, that’s it thanks trieythylborane, that’s a heck of a screen name BTW