The Furimsky boys run The Fly Fishing Shows around the country, as in our former Bellevue show. Nice guys and they love to fish.
I tie a similar pattern (for striped bass) but without the foam, I use some Softex painted on both sides of the feather. And less weight.
For Sea Run Cutthroat Trout I think you will need to tie this on a much smaller hook, like size six or eight and a shorter shank too.
Some of the pocket estuaries and tidal lagioons that I fish near hold tremendous numbers of juveniles just like this pattern.