BTW if you want Crunch on Houndoom, keep it unevolved until L49, cos Houndour learns it then. And that'll help you take on Wobbuffet, since Dark types don't take Mirror Coat damage. Woot.
Currently working again on the Battle Dome L50, just beat Tucker with the following:
Metagross@Choice Band
Nature: Adamant
EV: 100 HP/252 Att/80 Def/78 Sp Def
Meteor Mash
Shadow Ball
Earthquake
Rock Slide
Sceptile@Leftovers
Nature: Modest
EV: 252 Sp Att/252 Speed/6 Sp Def
Leaf Blade
Thunderpunch
Substitute
Leech Seed
Salamence@Lum Berry
Nature: Adamant
EV: 60 HP/252 Att/20 Def/156 Speed/20 Sp Def
Dragon Dance
Aerial Ace
Earthquake
Fire Blast
I got a bit lucky with Tucker, to be honest. I led with my Salamence, probably a bad idea since he used his Swampert, KOing me with Ice Beam. I KOed him with Leaf Blade, and then faced his Charizard. Luckily, he missed with Overheat first round, giving me the round I needed to Substitute. Next round, Leech Seed, then kept using Substitute until about half health, finishing off with Thunderpunch.
I think I'll replace Salamence with an Ice Beam user, since I'm gonna need one for his second team (he uses Latias and Salamence as well as Swampert). I'm thinking Starmie, to keep the heavy sweeping theme of my current team.