When rolling with a Tatu BJJ Black Belt the other night who frequently competes in IBJJF tournaments. 3x this year that I know of. I asked him about Electric Chair Submissions, Banana Split Submissions, Crotch Rippers, Bone to Bone Texas Clover Leafs, and Hip Locks.
He told me they all are illegal.
I'm not saying he is right, but of everyone I have trained with, he is the most trusted when it comes to IBJJF Rules.
I'd love to know what's legal and what isn't.