Pier Park DGC in OR built their tees level with the ground, in a 6-8 months wet environment. Tee #s 4, 9, 11, 17 are slowly sinking into the ground, and creating little square ponds to throw from. On hole # 13, I started throwing a LHBH hyzer, the approach of which is a 45* angle right to left across the tee. Righties watching me liked the shot so much they now anhyzer the same shot, and though the tee was never designed for this approach, we make it work.
I guess my take on this is: I'm 6'. 8' can be long enough, if there is 2'-3' of level run-up just behind the tee. 4' width is OK---if you need wider, adjust your start accordingly. Make the tees ground level if at all possible, but account for wet/flowing-soil conditions---i. e., build up the surrounding ground at least 3'-4' behind and in front of tee, surrounded with railroad ties if necessary. #3 at Pier Park, on a sideslope, is done like this.
Best wishes, seems like you're really attuned to the best tee boxes you can afford.
