It is interesting seeing others settings on the Sand Shark but you do have to realize, each machine will be different, each user is definately different in hearing capabilities and in how they use and interpet what the machine is saying also....along with that, each beach is different. That being said, find a starting point on you machine and make small adjustments when you find a target to see how it changes what you are hearing. This can be hard for some to do with limited time to hunt for most....
HH
Cliff