Playing games that don't have support for game cube controllers

[CraftKing7777]

Hi guys! I've been wanting to play the Newer Super Mario Bros mod converted to an iso with Dolphin. That works all fine and dandy but I want to play with my friends. Netplay only lets me play with GameCube controllers or controllers emulated to be a GameCube controller. Non modded Mario Bros needs the Wiimote for the shake function. Any ideas how I can play games that need the specialized functionality of the Wiimote on netplay? Thanks