This is something I want to try in my back yard, but I'm not sure if I should be trying it myself or hiring a professional........but here goes. There is going to be a hot tub moving into my back yard soon. I want to make it a little different on the placement however. I want to get some fill dirt, and build up a bit of a "hill", surround that with some sort of landscaping stone and make sure the entire middle is filled with dirt. Then cover the top with something smooth that I have not yet decided, and place it up on this platform. My concern is one of two things. First, what if the dirt in the middle settles? Of course that is going to be bad, but how can I prevent it? I would use a compacter to pack the dirt down as much as possible before hand but I'm not sure if that is enough. Second, with the weight of a full hot tub, I am a bit concerned if the walls around the platform will hold up to the pressure. Any ideas / hints would be appreciated.