I don't like Intimidate on sweepers. It's just begging for Trace or Ditto to come in and ruin your Attack. Shed Skin is the only real choice for a bulky sweeper anyway.
Personally, I run 252 HP/252 SpDef/4 Def EVs and 0 Speed IVs, Shed Skin and Lefties. (Careful nature I think? The -speed +spdef one) Drain Punch/Payback/Bulk Up/Dragon Tail. I can either choose to switch in on a physical attacker like Ttar or a special attacker. It's more beneficial to go in on a Physical Attacker you can wall with just typing and base defenses, because it can mislead your opponent about your build. People are terrified of Overconfidence, even though it's not very good on Zuruzukin, so they'll almost always switch out if it's a pokemon that you *might* be able to KO.
Anyway, it's pretty simple. All you have to do is scout what your opponent's counter is the first time you send Zuruzukin out. There are SO MANY variations of Zuruzukin, that there's a high chance that they'll counter wrong and grant you free additional setups. If they send out a physical set-up sweeper like Roopushin, (or Zuruzukin) then you can just Dragon Tail them out on the turn they setup, and there's a chance a useless pokemon gets dragged out and you can score another setup while they switch. Once you have +2 under your belt most things won't be able to touch you. If they send out a wall you can just eat their status and set up some more. If they send out a Special Attacker you can just eat their attacks (other than very specific cases, like maybe Focus Blast Gengar/that new psychic and Aura Sphere Lucario) and set up/drain punch your health back. If you have Stealth Rock you can just Dragon Tail the likes of Ulgamoth out and it basically counts as a KO unless they have a Rapid Spinner.
The only things that would really force Zuru to switch with this build are very strong Physical (or extremely strong Special) attackers that can KO Zuru in one (or two) hit after he has +1. These will most often be Fighting types, so Dream World Shanderaa makes a VERY good combo due to being able to switch in and eat attacks like Close Combat and HJK and punish with Overheat, though you must also be wary of the less common Flying types. Other things that can stop Zuru's fun pre-emptively are Perish Song and faster phazers. Strong water attacks in Rain might hurt as well, though those are uncommon.
By the way, anyone know of any other pokemon with good synergy with Bulky Zuru? As I mentioned, Shandera is nice, but I wish I had some other pokemon to support him since he's so strong but kind of serves as a one-person act. I thought about running BP Blaziken but it doesn't really have anything extremely beneficial to pass to Zuru.