I say learn to use both effectively. I personally favor the boxing approach of strong side back but I switch it up a lot to be deceptive. People tend to get extremely confused when you suddenly switch your lead.
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Member of DaJoGen MMA school under Dave Hagen and Team Chaos fight team under Denver Mangiyatan and Chris Toquero, ran out of Zanshin Martial Arts in Salem Oregon: http://www.zanshinarts.org/Home.aspx,