something I've been thinking about:
Hypno*Choice Scarf
Hypnosis
Switcheroo
Psycho Cut/Brick Break/Seismic Toss
Focus Punch/Assist/Trick Room/Fling
Fast Sleeper and then switch out. Brick Break + CScarf gives you the possible chance of KOing Weavile and denting Tyranitar (though you should just sleep Tyranitar and then switch to your counter. Focus Punch is useful for they switch after a switcheroo (no pun intended) or if they are stuck repeating something like Aromatherapy or Swords Dance or any buff. Trick Room makes the speed boost from their CScarf a hinderance and is useful for Hypno since even with a +Spd nature he's still very slow. Assist if you like random novelty and know that your options are good (Assisting Earthquake, Stealth Rocks, Aromatherapy, maybe Explosion and other moves are useful but also very random).
edit: With Max EV's and +Spd Nature, CScarf Hypno reaches 384 speed, outspeeding Max EV Jolly Weavile by one point (assuming 31 IV's for both).