No idea if it was Champ Man 01/02 or a different year, but we invented our own system that was somehow pretty much unbeatable. You essentially dispensed with all wide players, put all your cash into buying the best CDs, CMs & CFs available and then lined them up in a 3-3-3 with an optional DM or AM depending on how attacking you wanted/needed to be. Ideally you’d have one or two Paul Warhurst types who could play almost anywhere in the system so you could make the most effective use of your subs too (was really annoying if you ever had to sub on a lone wide player).
Not really sure why we tried it, probably just necessity at first, but we were regularly putting 8, 9 or 10 past teams, especially in the lower divisions. It always seemed to have diminishing returns after two or three seasons for some reason, but until then you could pretty much put your feet up and watch your team smash all-comers. Never worked in any other versions.