I have Wiiflow setup and working with Devolution. It was as easy as copying the loader file from the Devolution source into the WiiFlow folder.

For Nintendont & DIOS-MIOS what do I need to set these up the same way? Currently if I select to load from either the Wii just reboots to the channel screen.

 

for DM just install it, for Nintendont you need the last version of wiiflow 1076 and you have to edit the path of gamecube games, and select Nintendont in Gamecube launcher, just that
for DM you must transfer the game with dmtoolbox, for Nintendont you just need the games in the X:games/the game you want/game.iso
the iso always must be called game.iso, but the folder could be called as you want it does not matter the name