I use plastic tees. I use a longer one (2 1/2") for the driver and a broken one that's about 3/4" long for everything else. I use the short one because sometimes it's just easier to adjust my tee if I put it in slightly on an angle and the ball won't stay on it when it isn't buried 2" into the ground. Just lost my driver tee last week on a bad drive (insult to injury), but had another in the bag. Pretty sure I found them both on the course. I can't think of the last time I bought tees.