Have used the tee on 2 occassions same golf course. I find that the 2 3/4 length tee is not long enough to fit snuggly into the ground. I would prefer the longer one. As far as getting off the tee, one still has to hit the ball correctly in order for the ball to go where one wants it to go.
So for that matter the jury is still out. The times that I have made a good connection, the ball goes well
Cheers,
Frank