I've got a 600 watt flush tranducer in the bilge area midship. I'm considering switching to a 1,000 watt mounted in the stern where I have a temp sensor/tranducer. I fish in 120-2,000 feet of water and now you got me thinking 2,000 watt. Anyone else upgrade to a 1,000 or 2,000 and (if so) was...