1) First of all, are there any other pokemon trainers out there over 15?

1. You forgot Helperman, (joke {maybe}), I'm not over fifteen, but I'm thirteen, so I am close enough.

2. I wish I knew.

3a. For your two rock Pokemon, I think you should have some sort of rock move, like Rock Slide. That way, you would be wise in Having a move for each type.

3b. Umbreon should have at least three attacking moves for foes.

3c. I am happy to know that there are at least three people who have Manectric, (including myself), but he or she is not as strong as it could be. Mine knows Thunder, Bite, Iron tail, and Charge, and he can beat just about any Pokemon because the Charge, (makes next move's electric attack twice as strong), and thunder combo. I suggest you have similar moves.
Both can be obtained by AR, but Jirachi can be also obtained by Coloseum bonus disc.

P.S. Teach Tranitar Crunch too.
The true best,
Helperman

1. I'm exactly fifteen years old.

2. The only tournaments here in the game are the League and the Battle Tower. You can also link up with a friend and commence a friendly battle. Or do you mean National Tournaments? Sorry, but I don't live in the UK, and I know none in the United States or Canada.

3. Jirachi can be imported from Pokémon Channel after completing the game or from the Pokémon Colosseum bonus disc Special Gift programme. Deoxys must be obtained from Fire Red or Leaf Green after you use your Aurora Ticket.

As for your team, let Tyranitar learn Crunch, teach Shadow Ball to Umbreon, teach Shadow Ball to Espeon as well, teach Rock Slide to Golem in place of Double-Edge, and lose Hyper Beam and Thunderbolt on Manectric for Brick Break and Rain Dance.

Hay! Sorry, I'm not 15 or older. I'm thirteen.

Do you meen Pokemon contests (in the game) or card tournaments? If it's the ones in the game, just go to the Master Rank contests, and talk to the lady on the right behind the counter. You have to have a link cable.

If you mean card games in real life, go to the nearest gaming store and ask them. I have never tried, but I should.

I have a kyogre EX with an atack that does 120 hit points, and nas 150 hp. It was in the first pack of hidden legionds that I got! Oh, sorry. trailed off to Pokeland. Well, anyway, your team is good (except all the hyperbeams). But your umbreon and golum might need work. Expoltion isn't a very good move, because it k.o.'s you too. Your umbreon could use some better offensive moves, and you should teach some good moves, of diferent types, in place of all but one hyperbeam (because it's a good move, but not if most of your party has it.

For Jirachi and celabi, the only way to get them is from Pokemon Colosium ar gameshark/actionreplay. But you cant' get celebi, till Fire Red and Leaf Green, and you might not be able to even then. By the way, who is X?

P.S. To all those people who think girls don't like video game, your wrong. I'm a girl, and have about 10 friends (that are girls) that like playing video games.