I admit, I am guilty of this also. At around 4 1/2 months of BJJ I am really trying to focus on breathing and technique without using power or strength. A guy I fight all the time is a bit "newer" than me and stronger. We start on our knees most of the time. He is all power and bullrushes the crap out of me at the start of the round. Now not to waste time pushing and pulling for 6 minutes, I would usually pull guard and play from there. But sometimes I want to get a dominant position right off the bat. Is there a "sweep" I could do while he is on his knees and ready to bullrush?