Ok it's been confirmed. Smash Stack doesn't work, the wiki page is apparently misleading. What you can do now is two things: Either try Indiana Pwns or WAIT PATIENTLY until an exploit is found. I will be one of the first to know and will make a tutorial as QUICKLY as I can. People just be patient...
Sources and Links:
http://wiibrew.org/wiki/System_Menu_4.3
http://gbatemp.net/t236619-wii-system-menu-4-3-released