Not particularly, I only have my own training to do by, but butterfly sessions always had me dedicating time to solely developing the kick. Getting it fast enough and powerful enough, with enough flick on that second kick to get a bit more reach in the fly was the aim.
I spent alot of my prime summer working on the shoulder n chest muscle to try and get some more rise out of the water to reduce the drag around my arms but i found a better developed and well timed kick technique to be have a way more substantial effect.
Not particularly, I only have my own training to do by, but butterfly sessions always had me dedicating time to solely developing the kick. Getting it fast enough and powerful enough, with enough flick on that second kick to get a bit more reach in the fly was the aim.
I spent alot of my prime summer working on the shoulder n chest muscle to try and get some more rise out of the water to reduce the drag around my arms but i found a better developed and well timed kick technique to be have a way more substantial effect.