Agree 100%... If you can get close enough to snag his gear and get it into your boat, so you can examine it even further is recommended. Don't hover around him all day and then get desperate and cross his lines. Act like your being chased by bees, swerve over, etc.... When he screams at you, tell him you didn't think he was down that deep, he will yell back something in relation to depth he is fishing and BAM...You have gear he is fishing and the depth figured out, the rest is history.