When choosing a bonefish fly, it is important to keep in mind the shape, size, and sink rates. Depending where you are fishing, you will need to have a heavier or lighter weight bonefish fly. For instance, if you are fishing in shallow water, you don’t want to throw a heavier weight bonefish fly in, as it will scare the fish away. Instead, you will want to have a lighter fly that will sink towards the bottom without having a strong, heavy impact.
Advantages of the Blood Knot: it is strong, compact, and works with dissimilar diameters. However, the disadvantages are that the tag ends at a right angle. If not trimmed close, it can catch on the rod guides.