Crashed my phantom 2 (First Version) in a lake. About 10 feet deep. Swam around and was diving for an hour+, I could hear beeps which were the start up sounds occasionally but unable to find it. What's the best option for finding a phantom crashed in water? Anyone have experience doing this? Maybe a fishing rod, big treble hook and a lot of wait trolled along the bottom. I only have until tomorrow to get this until next year. Thanks for any ideas.