How to defeat Emerald and Ruby weapon

WEAPONs are huge beasts that are destroying everything in their path.  It's up to Cloud and his group to destroy these massive beasts.

The Emerald and Ruby weapon are the hardest to beat.  They have powerful attacks and a ton of HP, so don't think this is going to be an easy battle.

Emerald Weapon:

 You'll find this weapon swimming around underwater. He is the second hardest weapon, but don't think he's going to be easy. He can wipe out your entire party in one hit.  First you must get rid of the 20 minute timer by getting the underwater materia.  To get it, go to the Underwater Reactor and walk around in the glass tunnel until you fight the ghost ship. If you're wondering what it looks like, it is a big wooden ship with a skeleton who is holding a paddle. Use morph on it to get the guide book.  To successfully morph a monster or enemy, you must destroy the enemy when the person in your group who is equipped with morph attacks.  Trade the guide book for an underwater materia with the man in Kalm. (He is located in the house farthest to the right on the second floor)  Then, get your best magic users and stick them in your party. Give them strong weapons with 6-8 slots and strong armor (Escort Guard, Mystile).  You also need to equip Final attack and Phoenix Summon Materia on your strongest character. Then have KotR (Knights of the Round) prepared with W-Summon. Have all your strongest Summon Materia handy in case things get a little rough, and they will. A few mime materia's (mime is found in the westernmost cave.  You must get there with a green, black, or gold chocobo) can work wonders especially if you use them after KotR. If it's powered up enough, you might defeat Emerald Weapon in a matter of minutes.

 Ruby Weapon:

Now, Ruby Weapon will be a little bit tougher than Emerald, due to the fact that his attack, Whirl Sand gets rid of two of your party members. To solve this problem, kill off two members before the fight. When Ruby sinks his little tentacles into the ground behind you, revive your allies using Life 2. Before the battle, equip a ribbon to protect you from the many status changes that the tentacles can do to you. Also equip Mystile to avoid Ruby Weapon's physical and magic attacks. Hit Ruby with Hades after he has stuck his tentacles into the ground, which will Stop  him, and follow it with KotR. Just keep miming it with everyone until he dies. If Stop wears off and Ruby attacks you, just use a Megalixer, cast Hades again or use stop magic and follow with the KotR and keep it going until he dies.  You can also equip quadra magic(I think it  is located in the southermost cave and you have to enter it with either a blue black or gold chocobo- I got this info from Nic Canac, my buddy) and attach it to Ultima so that you can cast it more than once. When Ruby Weapon dies, I think that you will recieve the Desert Rose, I'm not sure, but go to the man in Kalm and exchange  it for a Golden Chocobo.