true if anything you could still test around the wiiu setup and share load time results and save speeds; see how consistent everything is and if it's viable. WiiU technically runs gamecube games natively if enabled with homebrew so it might run exactly the same as the wii/gc. id test using NINTENDONT to usb load. it might legit be 1 - 1 the exact same thing as usb load wii. im pretty sure NINTENDONT is loaded while in wii mode anyways.

It might not even be entirely worth the hassle attempting to run the game on WiiU. I'm assuming since you're using an HDMI compatible capture box you also aren't using a crt as well. The game originally was designed with low input delay in mind; playing off the capture directly or using WiiU on more modern TV's and monitors would make fishing unnecessarily precise. I'm also finding issues with input delay on WiiU modding forums. Legal or not, imo it doesn't seem like an enjoyable or sustainable way to play. If you're really not wanting to spend any extra on hardware or whatnot you could always speedrun Wild World on your WiiU.