Stairs. The row I'm working on in the picture is the last step. The next layer of blocks will not go on top of the row I'm working on in the picture, but will end at the next block in.
For this to be safe for dogs, I wanted the stairs to be the full width of the pool. My two options where concrete forms, or blocks stacked on top of each other. The concrete forms seemed too complicated for what I wanted. They might have been better, but in the end, nobody will know the difference either way. Just my back will remember this for a very long time!!!