All of my shots are slam dunks

Actually, a blood trail will show up in water better than you would think it would. You can actually see the blood floating in the water. Also, anywhere there is leaves or sticks or any type of debris in the water blood will show up on that. You do have to learn to pay really good attention to exactly what your deer runs by as it leaves, in case the blood trail isn't all it should be. You won't have trouble following a really good blood trail though. I really don't change anything from hunting water to not hunting water. I never take a shot unless I am absolutely confident that I can hit it. If you just take the shots that you feel confident shooting, you won't have any problems.