I have a good gaurd that is hard to pass infact only a few people in my school can pass it, but the one way people have learned to do, is stand up and insert their knee, and ofcourse when that pressure is agaisnt the goin its damn near impossible to hold on, I know three sweeps to use when people stand up, feet on hips and roll, lock around knees and roll to side, and underhook leg and bridge, but sometimes the knee gets in and they pass, any ideas?