Keep some booze around. In you get a group of 4+ containers nearly each other, have a drink before opening them. Drunk adds +2 to your lucky charm skill. I would also recommend that the character with the Lucky Charm skill who will be drinking the booze use gear with lucky charm bonuses as well. Belts and necklaces/amulets are the gear that can augment Lucky Charm. Worst case higher lucky charm skill will just give you more loot to sell to get more gold.
