Is there any mod that changes how poison works? I would like the poison to be applied to a weapon and have a number of hits until it wears off, and not have it applied to bows at all but to a set of arrows. Even if each arrow took one potion it would be preferable to poisoning the bow and having to repoison it between each shot during combat.

http://www.nexusmods.com/skyrim/mods/68425/? offers a perk that increases the number of times poison can be used before it needs to be reapplied.

http://www.nexusmods.com/skyrim/mods/61490/? should at least help with the wanting to poison a bundle of arrows aspect.