Jinx doesn't lose them the Dispel, so only delays the inevitable really; probably why you're not a fan of it. ; ) Reverse Magic wouldn't work, because it protects the mage and Dispel targets the enchantment. Decoy is really only good for trying to attract a Seeking Dispel or Nullify (or pretending to be a Block or Reverse Attack for example); it wouldn't work against a Dispel at all. You also can't put your enchantments down in a random order:
Rulebook, p.18:
Important: Players are notpermitted to “shuffle” or mix up their enchantments. Your opponent may want to keep an eye on which enchantment was cast at a particular time by you. Always place newly cast enchantments on top of old ones.
About the only way to protect enchantments against Dispel is with Enchanter's Wardstone. That, coupled with an Enchanter's Ring, means your opponent is paying three more mana to disenchant every spell on your own creatures. (Four more, if something like your Arcane Ring or Ring of Asyra also applied for the enchantment.)
Reverse Magic and Nullify protect against Purge Magic, but that's about it (in relation to enchantments, anyway).