I hate to report, but after 2 Saltwater hunts at the beach my ATPro is dead. Looks like it will be going back to Garrett when I get back off of Vacation. I had everything tight. Went out in the surf and had trouble ground balancing. Would ground balance down to 12 in wet sand, but when I moved back to the dry sand it would not ground balance AT ALL. Knew something wasn't right. I headed up to the room after that defeated. Woke up this morning to try it out and in pro mode all I could get was a steady tone in Pro mode. I will send it in. Get the upgrades and everything. I brought a back up Ace 250 so my vacation isn't ruined. Always bring a backup.