So, i tied these flies more as an experiment on looking cool than anything else.They fish awesome. The bullet shaped head makes these track great in the water and has just enough neutral buoyancy to make them sink very slowly. I will continue to make some in order to speed up the process. They do add about 15 minutes to a build mostly because I cannot find a good way to glue the two sides of the head together. I have some green ones on the vise as we speak.