When it comes to nymphing, there are a few key things you want to look for in a good rod. First of all, you want a rod that is going to be able to handle the weight of your nymphs and leader. A lot of times, nymphing requires using heavier weights than traditional fly fishing, so you need a rod that can handle that extra weight. Another thing to look for is a fast action rod. This will help you get better hook sets and also help with accuracy when casting. Lastly, make sure the rod is well balanced. This will help prevent fatigue while casting and also help improve your overall accuracy.