I was never a wrestler or grappler before I started BJJ so maybe this is normal, but for the first time at training yesterday an opponent I never fought with before "shot" from the knees. We start on our knees and normally one of us pulls guard or tries a sweep or something and boom we are off and running. But this guy shot at my legs. Not sure exactly what he did after that, but I think he grabbed a leg or got an ankle/foot and rolled me to my back or he may have reversed himself and pulled me in his guard, I really can't remember now, lol. Could I try a guillotine while he shoots? Not that I am any good at them but I was wondering what I could do to counter this, aside from hopping to my feet and getting the hell out of the way?