I was looking for butterfly resources in the gi. Apparently, Adam Wardziński is the man. I found a reference to the BJJ Scout study of his game first, but that rabbit hole goes deeper than I’m ready to handle right now. Let’s start simple:
On the question of lifting with the legs, this video emphasizes the bottom leg:
5 drills to fix my butterfly guard? I don’t need an experienced training partner? Yes please.
Lastly, here’s the first (of 5) BJJ Scout study of his butterfly game. You’ll see that he likes to use a half butterfly position a lot. As you would expect, I’m intrigued.