Good trapper lead in SS?

I am going for 64 bp in the battle tower, and currently have 31 bp. I want a good trapping lead that can be found in Soulsilver, and that wont take a couple of days to get.

The rest pf my team will be as follows:

Gallade w/ muscle band
Hasty nature
Steadfast
1: Psycho cut
2: Shadow sneak(to be replaced by ice punch once I get 64 bp)
3: Night slash
4: Close Combat

The whole reason im going through the battle frontier. I know I could replace shadow sneak with swords dance, I just cant find any heart scales.

Houndoom w/ wise glasses
Docile nature
Early bird
1: Dark pulse
2: flamethrower
3: nasty plot
4: fire blast

My special attacker. I know that his ability sucks, but it would take too long to level up another one.

For the third slot, I want a good physical defensive trapper, dual type, good moveset, AND has to be easy to get in soulsilver.

sludge bomb on your houndoom instead fire blast. you already have a fire move and i would rather keep better accuracy with flamethrower. you can get sludge bomb from the route 43 gate attendant.