User blog comment:Fliu/Chapter 946: Luffy's Next Big Step/@comment-180.191.122.111-20190622004046/@comment-2600:6C5D:5D00:1C9:DDAA:E27E:9F5B:454C-20190623113911

By using too much Haki will burnout fast. He should train on how to use a small amount that will have a big effect. Luffy was unable to face the previous admirals due to their Logia powers, expecially Smoker. Now, he can make a punch on them, but Akainu has developed a defensive measure similar to Katakuri. Luffy said his armament haki can boost his defense, but Hordy used a cheap strength added with his supposedly serated sharp teeth to bite Luffy. I say by combining Armament Haki with Iron Body will give the user a more powerful defense.