My friends gopro 3 is on the bottom of his lake. Check out there new clamp mount. It's a little spent but it's built sold. It will work great on a tower. I use the crap out of my mono pod. it's a carbon fiber one. Really nice and doesn't corrode. I also use my Mobe duel charge battery pack and battery back pack. I don't use the backpack on the camera, I use it as a battery charger. Get some moisture pads for the casing to prevent fogging. You'll need a editing program and a computer that can push it. I've never been a fan of Gopros program. I use Adobe Elements 11.
2003 Supra Launch 22SSV
1986 Ski Natique 2001