In my personal experience, if the weather is crappy and you don't want to be out in it,............. neither do the critters. Juust as a rain lets up, they start to move into the open . Espescially the birds. They can't fly as well with wet feathers ,so they try to get them dry quickly. That's hard to do in long grass and under dripping trees. Hunting seasons for me mean cold weather, so like crooketarrow was describing it is always a cold rain (with the exception of spring Turkey).Snow is a different story. Generally ,with bow hunting deer ,you let them come to you. Scout the area ,find the most likely spot and set up an ambush. Get there early,so you don't don't diturb the game. most guys hunt from a stand, so the crunchy leaves don't matter up there. it just makes it easier to here them coming. I hunt from the ground ,so after I choose my location ,I clear a spot on the ground so I'm not stepping on leaves at the critical moment, should I have to shift position. The sound you make will sometimes even attract deer ,as it sounds like a buck making a scrape. (Guessing). It's happened to me often enough to comment . The fresh earth also acts as a cover scent. I often have deer walk within 6 feet of me. If you do have to walk ,think like a deer. Watch them walk and imitate the pattern of sounds they make. Step..............step..........step ,stop. wait for a good minute while surveying your surroundings,and repeat. I also try to imitate the sounds that I've heard the deer make as they are moving. It's a locator call ,so they can keep track of each other. It's a very soft grunting sound. barely audible.Takes a long time to get anywhere,at first ,but with a little practice you will spot more game. Your greatest tool for hunting ,is being able to think like an animal. Observe ,learn and practice.