how do i set up the 50/50 guard? I mean there has to be a step by step basics on it right? i know cobrinha does is from de la riva guard then goes to inverted guard and finally to 50/50. Is there a simpler way of doing this? i've seen the mendes bros and some of the ATOS athletes transition from DLR guard to 50/50 but it's either they're scrambling for it or they have a really crazy set up for it. BJJ guys help!