>>954304easy to make a camera pole from aftermarket $20 accessories packs. do you have rails mounted or a available rod holder? makes installation super easy. in the accessories packs theres usually a flange kit and a few adhesive pads to use. rail system makes adding on stuff a lot easier. the app so you can use a phone or tablet as a monitor is cool.
use a pool noodle ziptied onto the camera pole and in the kit is a float for the cam.
tl;dr search scotty mounts, theyre all you need unless you wanna diy