All I can say is that you need to lean into them. get the back wheel "side ways". I haven't ridden a fixed gear bike in a long time. the other day, on my road bike, this lady stop right in front of me. I was doing about 27 mph. I staid clipped in and skidded side way for 2-3 feet. If I can do this on a road bike, you can do it on a fixie or a BMX.