The stimulator fly pattern works. Why not try some of Semperfli's new Floating Poly Yarn as the underbody. The colors are amazing so here is a video of me using it as the underbody and tying a regular stimulator.
Hook: Ahrex FW531 size 8
Tail and Wing: Natures Spirit Deer Stimulator hair
Body and Head: Semperfli Floating Poly Yarn
Hackle: Whiting Farms red label
Ribbing: Semperfli .1mm gold wire
Underwing: MFC bulk CDC
Cement: Solarez bone dry