Just a thought but have you considered replacing the dumbell eyes with bead chain to cut the weight? Sili-skin may work as a substitute for the epoxy also. Again just a thought for a bones version. It is a beautiful fly.
I can't wait to field try my sluggo umm.. er ..ah ...siliskin sandeel this year. ;-) I know it's gonna kick a$$ on stripers.
Mackeral chunk fly in the works. It's heavy as hell though.