beach hunting. I have never done this before but i've metal detected for year's. I currently have a new GT and an XLT that is a little over a year old. I would want a machine made specifically for water so if it got wet it wouldn't hurt anything. I don't want to spend over about $600. What do you think of a refurbished cobra beach magnet or a Viper trident? I would consider trading my XLT for a machine of equal value and condition. Thanks for your help. Gary