YOU SAID:

Trying to watch a horse row a boat is like watching your own aunt try to catapult over very same horse. In a word, breathtaking.

INTO JAPANESE

馬行ボートを見ることを試みて非常に同じ馬をカタパルトするおばさんを見ているようです。つまり、息をのむ。

BACK INTO ENGLISH

Like watching aunt trying to watch the horse line boats, to catapult the very same horse. In other words, breath-taking.