You're better off removing the front hood seal and the cowl seal than opening the hood. Then there's more cooler air over the engine (as opposed to thru the radiator...) and no water getting in.

Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.