Yep been there Also;;;;; Plus this one I have a secondary system (because of my High End GPSs LCX 111C and 37C )on my PII that has two Proxsimity Sensors Outer rings overlap at 10ft Dia. and Inner ring within 1ft of either GPS. When you get too close to the boat about 2.5 ft in any direction it tells you in a loud voice ( step back you are too close to the boat and the owner is about to be paged) with or without the cover on at the outer ring, if the inter ring of the sensor is violated the alarm goes off and I get paged and my remote start beeping. Up north Sleeping nicely and the thing starts going crazy waking up everyone including me and my remote is beeping like crazy Im in the room going though my clothes to find the thing, partner is room is going What the HELL lol it got real windy and the cover started moving up and down the sensors did thier job tooo good. lol I think I woke up the whole camp at 2:30 am before I could get it shut down lo lol lol