Just how vigorous of a boil is necessary? My kettle is a pretty wide 15 gallon cooking pot and my boil off rate is pretty high. In an effort to get that down to something a little bit more reasonable I'm attempting with the brew I'm doing right now to keep the burner as low as I can without it going out and just have the wort very gently boiling. It's boiling, and there's surface action, but it's not what I would describe as a vigorous boil.
Is that good enough? Is the boiling action going to be sufficient to get done what needs to be done (hop isomerization, driving off DMS, etc)?