For Austin, failing in attempting the Navy Six Techniques was anticipated, and it didn't dampen his confidence. After all, the Navy Six Techniques are systematic combat body techniques from the One Piece World, likely developed by the World Government or the navy over a long period to surpass human limits. It's impossible for Austin to casually replicate them in the Otherworld in just a few days.
Moreover, during these three days of attempts, through continuous observation and experimentation, Austin discovered some clues. He's developed some ideas about it as well.
Based on memories from his previous life, Austin recalled the principles behind the Navy Six Techniques.
Shave is moving at high speed in an instant (0.36 seconds) by stomping the ground dozens of times to create explosive counter force, achieving the effect that makes one appear to vanish from a foe's eyes.
