Re: 9ft 5w rod small stream spey fly line?
Forget the scandi and skagit stuff. Those are for two hand rods. For a 9ft. 5 wt, you can do it most likely with the line you already have on it. There has in the past been a whole lot of people saying you need to overline by three weights to do it, but that is a complete crock. I did a video where I spey cast underlined by one weight. Four weights less than some say you need to do it. Try it with the line you have.
The trick to doing it is finding where on the line the rod loads best. If you have a two tone line it's probably right where the color change is right at the tip of the rod. You probably don't want to use a real short head line but you still can make it work. If you don't have a two color line, get the whole head out of the rod and without shooting line, keep adjusting till you hit the sweet spot and then mark where that is on the line where the tip of the rod is.
Go on you tube and look around at single hand spey casting. Actually just spey casting in general. You can learn a lot just by watching it on you tube.