What's the longest butterfly race you could swim?

I saw a dude frog kicking during a 100 fly this weekend... I've never seen that in my life. I'm not sure I could even do that correctly, it seems like it would suck all the power out of the stroke.

I saw a dude frog kicking during a 100 fly this weekend... I've never seen that in my life. I'm not sure I could even do that correctly, it seems like it would suck all the power out of the stroke.