Thanks for the advice! I guess I'll try playing around with Snorlax sets without Curse or Sleep Talk and see which one benefits my team more in the long run. But I agree a sleep absorber comes in handy for the occasional Venusaur or Venomoth.Actually I would go as far as thinking sleep talk should be preferred over curse if choice must be made, because it allows snorlax to not be just a sitting duck for something else to setup on him, but it also works better as a sleep absorber thanks to it ever since I have seen a couple teams running either Spore (Parasect) or Sleep Powder (Venusaur, Venomoth) which is really annoying. On that note I would be specially wary of Venomoth teams not getting out of control with quiver dances because those really hurt a lot.
I agree with having a cleric though, just not sure if Jolteon's the best candidate for it although chances are your team relies on clefable for sweeping rather than supporting and there's no better second option.
Also how useful is HP ice on Jolteon anyway? Sure it's a pseudo Bolt-Beam combo but aside from Dragonite it doesn't really hit anything else hard right?
The way I see it, Clefable is the best at a number of roles (Cleric, CM, SR setter), but you can really only get away with 2/3 of these (if you forgo T-Wave) on one set. Jolteon being the 2nd best cleric will have to suffice, but that isn't necessarily a bad thing as Jolteon is great in this meta. I personally feel HP Ice is the best coverage move on Jolteon as Shadow Ball isn't doing a whole lot for it (SB is still a 2HKO on Zam & Gar before rocks, which T-Bolt achieves anyway). Dragonite is the most obvious target for HP Ice, but the move also hits grounds (Nidoking, Golem, Rhydon) and grasses (Venusaur) for more damage than Shadow Ball.
Another question for peeps in this thread, how have you been dealing with OHKO moves like Fissure, Horn Drill & Sheer Cold? It occurred to me that with more stally teams on the higher ladder that OHKO moves could become a decent - albeit luck-based - way of muscling through stuff like Clefable & Snorlax. Since I'm not used to playing with a rule set that allows these moves, I haven't thought of much counterplay (thankfully most people I've faced seem to be "honorable" enough not to use these moves, heh).