It rains a lot and occassionally snows during hunting season in my neck of the woods. This persistent moisture has a tendency to mat the fletching against the shaft providing little guidance and poor arrow flight, especially with broadheads. There are a number of things one can do to counter this problem. You can 1) treat your fletching with water repellent chemicals, 2) you can attempt to keep the fletching covered with fabric or plastic, 3) you can bare shaft tune your tackle to fly fairly well, even with matted fletching, or 4) you can shoot plastic vanes which generally require an elevated arrow rest. All of the above works to some degree, depending circumstances. Plastic vanes are probably the real answer but I enjoy hunting with feathers and shooting from a shelf, although I've been experimenting with vanes and rests. I bare shaft tune to get the best arrow flight possible. I even go so far as to bare shaft tune with broadheads but have to say it's a difficult and potentially dangerous proceedure. If you try to do so, make sure you've got a lot of acreage around because the arrows can take off in amazing displays of uncontrolled flight. I have found that long broadheads like the Howard Hill or Grizzly heads seem to fly the best with little or no fletching guidance.