I was just wondering if someone could explain to me the difference between having gain set to max and deep on. I havent really run with deep on yet but I do adjust my gain depending on digging conditions as if it is easy digging I crank it up but if it is very hard I run at 5 or 6 and anything deep I usually make a note and come back later. If gain amplifies the signal and deep on amplifies the signal what is the difference? Just wondering, good luck in the heat this week, maybe a quick overnight beach trip may pay off!!