Skarm: max HP and Spdef, put the other 6 in att/def
Ninetales: max speed if it doesn't have roar, no speed if it has roar. put most of the EVs in spatt/HP/def.
Ludicolo: If you go w/ an annoyer set (w/ Toxic, Leech Seed, Rest, and other stalling moves), give it max HP and split the rest between def and spdef. If you go with an offensive set (RD, Surf, Ice Beam, Leech Seed/Toxic/Filler), give it lots of HP and spatt, and dump the rest in spdef.