Madmans are just a style of replay. As with any other style of replays you need to practice. As a decent replay maker myself, I always use classic, but if you have a hard time dismantling Uke, try lowering the Desmemberment Threshold ( 80 is good.) , because almost every madman using footmod looks awkward and is hard to tell if your hit could actually break something, plus using classic is a good way to improve your multiplayer skills as well as make you into a good replay maker.