I finally got the nerve to take a jigsaw to my tr186 today to install a recessed trolling motor tray. I'm trying to figure out where I hook the drain tube to. It looks like theres a gap in the bottom of the boat that's a few inches high by wide, but I can't tell what it is. Anyone know if I just stick the tube in there? Is there a drain that I'm not seeing? Hopefully one you guys can help. Thanks in advance.