going back to the "game fishing" comment. Whilst I initially said the D300s would be the way to go, the D700 does have better weather proofing then the d300. But that said, not sure about the OP's lenses and how weather sealed they are considering the better weather sealing is generally reserved for the FX glass. That said, even if I had a d700/d3s on a boat with all the weather sealing in the world, I'd still carry a raincoat for the camera