This may be old hat to most of you. I have several sizes of brass beads for tying various flies but the shores of where I fish are lined with rocks, big rocks, and sinking flies catch quite readily on them. I would like to experiment with glass beads but do not know what sizes or types to look for. When I go to the craft store there is a stupifying assortment of beads. I could not find a thread here on the subject. Do any of you have any suggestions or victories that would help me? I think that glass beads would let me fish under the surface, and if I am patient enough, get down as far as I want but not drag along the bottom as I retrieve the fly close to shore.