I am currently installing a DG course at Black Butte Lake for the Army Corps of Engineers. They won't allow me to install concrete tee-boxes for a number of reasons, so I am figuring that I would go with those big rubber matts (like for horse stalls). Then I saw a video this morning ("Tee 7 Cape Henlopen") showing a guy teeing off from a wooden tee platform. While it looks a bit slippery to me, it got me thinking about alternatives to concrete Tee-Boxes. Do you have any thoughts on "alternative" Tee Box materials, and why do you like them? If you do not have concrete boxes on your home course, what do you have and how do you like it?