How many times have you fished some really good-looking holding water only to come up empty? May be a weight change would have helped. Using the right amount of weight or applying it in the right place may help you increase your opportunities. All holding water has its challenges. Reading the water is the first challenge. How fast is it moving? How deep is it? Is the water moving faster at the surface then it is at the bottom? How much room do I have to get the flies down to where the fish are holding? Where are the fish holding in the water column? There are many more questions and situations that could influence where and how much weight to use. I know when I'm on the water I am making slight changes as needed to get my flies moving at the same speed as the water current and hopefully in front of feeding fish. Remember to use the rule to keep at least 2 inches between split shot (see my past post at qualiflyproducts.com). Sometimes we can use weighted flies or a bead head to help us get to down where the fish are. Other times we need to use weighted flies and attach additional weight. The cast we use can also help us get into the strike zone. If you have a short distance to get your fly down to where the fish are, you may want to use a dart or punch cast. This cast drives the flies down fast into the strike zone. Check out Joe humphrey's video Nymphing Techniques (https://www.youtube.com/watch?v=3dhKgm4dztg ) for more on weight and casting. There are many techniques that can be explored and utilized in any one situation. Keep an open mind and try new ideas, don't be afraid to experiment. You will learn from every adjustment and get a lot of satisfaction from every success.