Hi everyone I was wondering if the Minelab Excalibur picks up hot rocks? Just curious because I have a few places that I want to look but has tons of hotrocks and according to one of the Minelab dealers in Hawaii the Excalibur is the one to use!! He is convinced that this detector is better than anything else that is out there because he tried them all so I guess I might have to go with the Minelab. Any response will be much appreciated!! Aloha