basically I practice shots that I would use in a tournament. To me it doesnt make sense to practice throwing 300-350 shots to the left of a lake to be safe and then when it counts try to throw it 400 feet strait down the middle. it would be the same with a 30 foot putt down hill. I wouldn't practice laying up at it then in the tournament try to sink it. Also when I practice I follow all PDGA rules so that it becomes habit. I have seen a couple of people during a practice round flip their disc instead of using a marker and then do it during a tournament and it cost them a stroke.