Star Trek TOS episode with obvious stunt double for William Shatner

I’m trying to find an episode of Star Trek TOS where Kirk was in a one-on-one fight, and the stunt double for Shatner was so glaringly obvious that it was laugh out loud cringeworthy.

I believe the fight was in engineering, and there was a red fence behind them.

If I remember correctly, the Shatner stunt double did a “hurricanrana” move on his opponent, where he wrapped his legs around the opponents neck and flipped him.