This is where we will keep all of the GameCube TRAiNERS that are available. Enjoy, and ya some posted are VERY old indeed and in .DOL format instead of a PPF patch! There is however a DOL to ELF/BIN converter (from 2003) which I've attached below for those interested.
Also, it's interesting to NOTE when examining the current Resident_ Evil_4_US+11_GC-Weedcube Trainer it was made with http://www.snsys.com/GameCube/ProDG.htm whereas many of the "homebrew" DOLs have been made with http://www.metrowerks.com/MW/Develop/Games/GC/Default.htm. Quite pathetic the only GC SDK publically released (leaked) thus far was from December, 2001, excluding the Dolphin SDK (release build: May 21, 2004 09:28). In any case, Enjoy the GC TRAiNERS guys!