Frozzz PMed me a mini guide a while back, although this was for cows:
Max you are running SC char? In that case you want something like 100IAS / 100% CB setup with as much frw as you can get.
Just couple tips; don't bother with javelin skills, lightning damage is worthless. Don't bother with maxers in inventory, they don't work with LF. Only thing worth having in inventory are frw charms. And you will need them as your overall frw with setup I recommend is rather low.
Head: guil's face (35CB 15 IAS jewel)
Amulet: cat's eye (20 IAS 30 frw)
Weapon: crafted javelin with 10 IAS min and as much damage as you can get or stack/rep combo (damage isn't even that important)
Armor: rattlecage (25% CB 15 IAS jewel)
Shield: tiamat's rebuke (4 x elemental damage 10-20 damage that works on LF, 15IAS jewel)
Gloves: 20IAS/15CB craft (or 20/10 lesser craft, forget javelin skills)
Belt: mav's
Boots: goblin toes (25% CB)
Ring1: RF
Ring2: mpk, random craft, anything goes
You can and don't have to bother with switch where you can have cruel crafted elite bow with shaenefshae and 1 point GA to kill remaining cows. Check breakpoints for bow base choice.
Max LF, pierce, 1 point GA and do whatever you want with rest of the skills. Decoy, valk, stronger GA, whatever you fancy.
With setup above you will rock 100IAS/95-100CB on your zon. Gear has only 70 frw, but you can use your inventory to ramp it up with plain 3 frw scs. Spare javelin is also good choice.
Since your zon will be pure physical damage, watch out for cow king. Avoid that area completely since she can oneshot him with some good pierce/CB procs.
CB scales with high psettings in 1.07 so she will be effective in MP games as well. It might not be worst idea to get ctc amp damage on your javelin if you are lucky, but it's far from necessary. It would help you picking remaining few cows with your bow. Knockback is also nice, but needed for HC only.
I think this is single best setup you can come up with. Shield is also not relevant. Only thing you want to do it get as high cb as possible, hit either 55 or 95 IAS brakpoints, have CBF and cold damage source and have enough sustain with ml,ll,mpk and spare javelin.