Neither, stay home. I hate deer hunting in the rain, especially when the heavy downpours come the dang minute that you are ready to shoot the deer. The downpours make it more difficult to see through the scope, it is more distracting when shooting, and the downpours (if they are heavy enough) can actually change the bullet's point of impact when shooting at longer ranges. I don't like rain for any kind of hunting..deer, ducks, geese, hogs.....or even fishing for that matter. Don't get me wrong, I can tough it out, but if the forecast were to call for rain...and especially heavy rain...and especially all day long...then I'd just stay home for the reasons that I mentioned.
Zachary