SWMBO found this tip on Pinterest and told me about it. Basically, you just put a wooden, anything really, over the top of your kettle and as soon as the bubbles that are about to boil over hit the wood, it all goes away. I did a small scale test with the starter I made today and it totally worked. I am going to find a bigger wooden kitchen spoon to try it out on my next brew. In theory, I don't see any reason why it wouldn't work as long as the spoon is big enough.