run the first 200m at about 50-70% of your full speed (depending on how fit you are...) and run the last 100m like a 100m. Be careful spacing is VERY important in the 300m hurdles.
No, that results in disqualification, and is slower than going over it. Also, a common technique is kicking down the hurdles. This usually results in disqualification at the collegiate level, but you...