I've seen fights where Mike Tyson would weave all the way, with his legs at a 20 degree angle. It was like he was doing a full squat. It was so low that the opponent couldn't even uppercut. I was a little shocked, but it worked. Think about it, if your that low, what can they possibly do to you beside using a hammer fist on your head (which does very little).

My opinion is this: Utilize all boxing techniques. There aren't that many, as compared to MMA, so you need to be well rounded and unpredictable.