You can even configure priiloader to autoboot the forwarder so that it launches snes when your wii turns on. Make sure u have a few wiimotes synced up beforehand or are running the latest priiloader which can use the front buttons on the wii to manually launch the WI system menu should your wiimotes ever become unsynced and u don't have a GC controller or something (which was supported in some older versions of priiloader).
Sorry for late reply. Looks like I'm cooking this day
Virtual console injection is the closest you can get to "Forwarder Channel".
Basically, you need to get an official Virtual Console wad, then, get your Roms you want to inject onto that wad.
Use a Windows program to inject your rom to that Virtual Console wad, and install it with any Wad Manager.
That's how it's done. I personally don't recommend it because a wad channel weights as much as 10 SNES roms.
The other way I can think off (AND THAT I PERSONALLY DON'T HAVE EXPERIENC WITH) is to set up WiiFlow.
I think I've seen some guys setting itin such fashion that all their roms (Gamecube, NES, SNES, etc) get's shown as individual games.
WiiFlow is I presume, kind of an... "Alternative Menu Theme" for the Wii.
Again... I don't have experience with neither of these methods.