Pokemon Colosseum Iso Help

Hi, hope you like my team. Ok. Here is my Pokemon Team (Just captured shadow Entei and Mt Battle by the way) with some good movesets.
Lv 31 Feraligatr - Definitely Surf and Rain Dance couldn't remember the rest. I think one was Bite. (I'm sorry)
Lv 33 Espeon - I know it can do Confusion and Return. Forgot the rest. (Sorry again)
Lv 33 Umbreon - Bite, Secret Power are the moves I could remeber.
Lv 35 Swablu - (Yes, I know it's quite high but I want it to be an Altaria and it's still not evolved!) Sing, Fly, Something and Something.
Lv 40 Entei - Only Shadow Rush. (I'm sure it can do Sunny Day, Fire Blast, Bite and Leer when it is purified)
I apologize about the Pokemon and the moves, I'll change it next time I'll go on.
Next up is the Shadow Entei capture. As you know, Shadow Entei is Level 40 (See above) and it is quite hard to catch (I can't belive i captured it in 2 Great Balls though!) so make sure youre Croconaw is purifed and leveled up to about Level 31 and your Swablu can do Sing. Now, here is the guide.
When Shadow Entei comes out, make sure your opponent has another Pokemon on Red in battle. Now use Feraligatr's Surf and Swablu's Sing (You could use Noctowl's Hypnosis instead as it has better accuracy) on Entei. If the Shadow thing goes asleep. You will be safe. Now the Shadow dog should be the only one left to beat/capture. Use Surf again to nearly knock it out (Sorry if it does. Save before the fight) and if Shadow Entei is asleep use Sing/Hypnosis again to make no more damage to hit it. Otherwise use it. If doesn't work bot times, keep using it until it is and make Feraligatr use Scary Face (This can make you attack first with Sing/Hypnosis) and when it is, this is what you do. Make Feraligatr use Scary Face and make Skiploom/Jumpluff/Noctowl/Other do nothing and throw an Poke Ball/ Great Ball/ Ultra Ball. (I advise you to use a Great Ball or an Ultra Ball) now keep doing it until it captures. If Entei wakes up, make Feraligatr do Scary Face and other to make it asleep OR you could try to capture Entei with out putting it to sleep.
Hint: You could Paralyze Entei or try to Freeze him (This could beat him though) for easier capture aswell.
Tip: On GBA, people said hold A and B when the ball comes flying in to the air. Keep holding it. If it breaks free let go and try it again. If it does, Congratulations. You could try it on Gamecube aswell (I hope it works) so happy playing! :)