oh.[&o] So how about taking the modified sub to a bay (which isn't too salty), and using electric wire to attach the sub to the remote, and using a fishing reel to let it go out and come in. sounds kind of weird but...

the camera I was thinking about using was a small wireless, long-range 2.4 ghz cam used for helicopters and planes and stuff. Would the range (which is like 450 yds) be seriously reduced if in saltyish water?