So where did Joran get the tools for digging,,I don't believe he could have gotten them and done the deed alone.
sw
tools would be in a shed on property of the Racquet Ball club - surely they have a garden tool shed? Maybe it was never locked and he knew about it. He is a big boy he could bury her deep enough and fast enough in my opinion. But yes the Kalpoe brothers may have helped him bury her after they were seen in the car or before that, for some reason they were sitting there, most likely trying to figure out what to do next.
I am not sure why the dogs did not pick up her scent or the scent of a dead body if she is there. I cannot explain that.