It's legislation that's doing it. The minimum requirements for a diving board are now too much for your average backyard pool. You need a 12' depth over a certain radius from the end of the board -I don't know what that radius is, but it's more than 5 yards. also, there is a volume requirement for the pool. How do i know this? The diving board at our pool is only allowed to be used buy the team under supervision of the dive coach -it was "grandfathered" in to the new legislatiion that way. no public use allowed any more