Kimura by blue belt over and over

I read somewhere that it is better to practice one kick, one thousand times, rather than one thousand kicks once. I remembered that saying as one of my training partners kept catching me in a kimura over and over again.

He caught me once, and it was a solid, convincing submission. No fluke, no luck, it was clear that this is what he wanted to do to me. I thought to myself, wow, that’s a solid kimura. Then, get this, he did again, then again, then again and again. I knew it was coming, I tried to protect my arms, I tried to defend, but he knew and anticipated everything. It was a thing of beauty.

After like the 5th kimura, I asked him, how the hell are you consistently doing this, even when I know its coming and I “think” I’m prepared to stop it. The guy looked at me and said, “I’m old man, I’m a one trick pony, but I’m good at that one trick.”

I acknowledge that he was an older practitioner, and that he was really good at his one trick. This got me to thinking and given my age, my injuries and physical ability, I might become a one trick pony myself. I just need to figure out what my one trick is going to be. Any recommendations? Perhaps the very same submission he kept catching me with? I’m decent with the kimura.