i am new to metal detecting. so far went out a few times. If anyone has a coin master pro. What is a preferable sensitivity? Should I always have it all the way up? I get a signal at times where it shows a querter then jumps to penny. And at times I start digging and no find and then get so frustrated that I go to another location and give up. I do also have a pointer so even with the pointer at times i do not find anything. Anyone know what I am doing wrong? Any suggestions helps. Thank you.