Hi Rich,
I have a Ladybird which im about to FPV for indoors, a ZMR250 for speed and thrills (4s), a Phantom 1 which is used a lot in my vids, just bought a Phantom 2 with H3-3D Gimbal to replace my P1, a large custom built quad that can fly for around 45mins with gimbal onboard and a 3 legged Hubsan somewhere lol. I use 3 Mobius cams and a GoPro3+Black on various quads / Metal Detectors.
Yeh im kinda thinkin now what do i need to navigate rivers, think the SB1 would need some upgrade for sure ... or choose calm spots which there are many in local rivers, im not planning on serious depth, it would be visible at all times (plus i dont mind getting wet) :)
My first idea mind was a boat with a lowerable cradle with my Gopro on