I have never covered the muzzle of a ML in 40 years of hunting/shooting,( covering the muzzle might cause condenstaion in the bore some have said, I don't know other than I have not found it to be required) keeping the muzzle pointed down keeps the water out of the bore and directs it away from the lock if the wrist area is kept under cover, when the time for a shot comes the simpler the better and I can hunt all day with a charge of 3f in the pan and it will go off when the time comes, as I said before the best thing to do is for each person to get out in some heavy spring rains and see what works best for them, the less the better when ones oppertunity to take the shot is measured in seconds, and after learning what works one can hunt in the rain with confidence and this is a BIG plus in any hunting situation,