Yes, sorry, I left those steps out... But yes, I can use Triiforce(on the FAT USB HDD) via homebrew to run the wad in the NAND enu(on the FAT USB HDD). I'm on firmware 4.1U with CIOS 249 and 222/223, homebrew 1.0.6 and WiiFlow 1.1.
Used Simple FS Dumper on the Wii to get a NAND dump on SD card
Copied the 8 folders of the NAND dump from the SD card to the USB FAT HDD
Used Showmiiwads to copy a wad file to the NAND
Installed Triiforce on the USB FAT HDD
Ran Triiforce via homebrew and ran the wad in the NAND on the USB FAT HDD (This works)
Copied the wad to PC:\batch\wads\
Ran the file: PC:\batch\Forwarder me.bat
Choose 2 (for Wiiware)
Choose 2 (For wad mode)
Used Wiiscrubber to replace the boot.dol in PC:\batch\Forwarders\Wiiware\isos\GAMEID.iso with PC:\batch\Forwarders\Wiiware\isos\GAMEID_main.dol
Copied PC:\batch\Forwarders\Wiiware\FARE.dol to SD:\Forwarders\Wiiware\FARE.dol
Used WBFS Manager 3.0 to copy the PC:\batch\Forwarders\Wiiware\isos\GAMEID.iso to the USB HDD(WBFS formatted)
On the Wii: Ran Homebrew Channel and started WiiFlow 1.1
Selected the game and the Wii freezes at the "Please Wait" message