Stafford touches on a very interesting point. Improving exit velocity for a showcase vs. to actually make yourself better. I think the stronger more athletic more flexible through training is the best way to go. But if you are just looking for a band aid to get your number at a showcase you need to find the perfect bat first. Remember no mlb player uses a bat that maximizes their exit velocity. They give a bit of that up in order to keep some reaction time in reserve. So if you are just hitting off a tee you may want a heavier or longer bat or both. You would have to actually experiment a little with this. Maybe even wood to get a couple more ounes. Then you need to do a lot of tee work with that bat trying to hit balls right at or away from the radar to get the best read. May even want to slant your feet a bit to 'pull' the ball bit still have it going right at or away from the gun. Just have to play with bats and foot positioning to see where your exit velocity is the best.