Okay so I've been playing my Hail team for quite some time now and its had its ups and downs. I won a lot of games when Garchomp was legal but now its tough dealing with the new metagame with Platinum changes. Of course, these changes are welcome on my side too. So here we go.
Note: This is for Wi-fi battles, but I do have access to Platinum.
Overview:
Abomasnow @ Leftovers
Snow Warning
Sassy Nature
Evs: 252 HP / 84 SpA / 172 SpD
~ Wood Hammer
~ Blizzard
~ Leech Seed
~ Protect
Abomasnow is the starter of the team to get hail going. I took the speed EVs from the analysis and pumped them into his Special Defense so it can take special hits well. This thing shrugs off Ice Beams, Surfs, and Thunderbolts quite easily. Protect is to scout, Leech Seed is just a great move in general. Other two moves provide dual-STAB. This thing destroys all opposing bulky waters too.
Heatran @ Choice Scarf
Flash Fire
Mild Nature
EVs: 20 HP / 252 SpA / 236 Spe
~ Fire Blast
~ Earth Power
~ Dragon Pulse
~ Explosion
I didn't bother trying to get HP Ice so I am using Dragon Pulse. This set gets the best coverage and is pretty standard. It covers my team's fire weakness quite well and is definitely able to get Flash Fire boosts because of this. Not much else to say except it fits in perfectly with my team.
Vaporeon @ Leftovers
Water Absorb
Bold Nature
EVs: 188 HP / 252 Def / 68 SpA
~ Surf
~ Blizzard
~ Wish
~ Protect
A pretty standard Wisher. Vaporeon also covers my Fire weakness and counters a lot of big threats to my team. It can counter Heatran, Infernape, and other various threats. Blizzard to abuse the hail and Wish/protect for instant healing. Protect is great for scouting and adding up hail damage too. Wish support is great on this team because most of my Pokemon are bulky but lack healing moves.
Zapdos @ Leftovers
Pressure
Bold Nature
252 HP / 220 Def / 36 Spe
~ Discharge
~ Heat Wave
~ Roar / Light Screen/ Thunderwave/ Toxic ?
~ Roost
I needed a Scizor counter and Zapdos definitely fit the bill. I am using discharge for the Paralysis because my team is rather slow. I am still looking for a Zapdos with HP Grass but for now I have Roar. Zapdos is great for helping with my Fighting weakness while also retaining bulkiness with Roost. It has so many resistances that help with the Hail team so it usually comes out early. I need help with a final move to put on it though.
Donphan @ Leftovers
Sturdy
Impish nature
Evs: 252 HP / 6 Atk / 252 Def
~ Earthquake
~ Ice Shard
~ Rapid Spin
~ Stealth Rock
I needed something to set up Stealth Rock and something to spin away rocks. Donphan was perfect. I recently started using him and he's been great. He's able to come in on predicted Stone Edges and set up Stealth Rock against other grounds. Ice shard rapes dragons trying to DD on me. For my hail team its important to keep up hail but Tyranitar can sometimes ruin it. Donphan is a great T-tar counter (physical sets at least) and Rapid Spin makes sure Abomasnow and Zapdos don't lose a quarter of their health upon entry.
Mamoswine @ Life Orb
Snowcloak
Naughty Nature
EVs: 252 Atk / 20 SpA / 236 Spe
~ Blizzard
~ Ice Shard
~ Earthquake
~ Superpower
This thing is a beast. And I think that might be an understatement. This is probably the only true sweeper on my team but he cleans up well. Mixmamo is so unexpected that it usually scores a kill with Blizzard. Peoople try to absorb Earthquakes with Gliscor but end up getting OHKO with Blizzard. First 3 moves provide Stab and priority but Superpower is there mainly for Blissey, Snorlax, and Bronzong (whom otherwise walls me hard). Here's a recent battle on Wi-fi.
Gliscor used Earthquake!
It missed!
Mamoswine used Blizzard!
Gliscor Fainted
Okay so thats my team. All suggestions are welcome as long as they have good reasoning.
Right now I am having trouble with Sleep. I have nothing to absorb sleep so it can really harm my team. Breloom hurts my team a lot but I've got 2 Ice Shards and Heatran to deal with it.
Note: This is for Wi-fi battles, but I do have access to Platinum.
Overview:







Abomasnow @ Leftovers
Snow Warning
Sassy Nature
Evs: 252 HP / 84 SpA / 172 SpD
~ Wood Hammer
~ Blizzard
~ Leech Seed
~ Protect
Abomasnow is the starter of the team to get hail going. I took the speed EVs from the analysis and pumped them into his Special Defense so it can take special hits well. This thing shrugs off Ice Beams, Surfs, and Thunderbolts quite easily. Protect is to scout, Leech Seed is just a great move in general. Other two moves provide dual-STAB. This thing destroys all opposing bulky waters too.

Heatran @ Choice Scarf
Flash Fire
Mild Nature
EVs: 20 HP / 252 SpA / 236 Spe
~ Fire Blast
~ Earth Power
~ Dragon Pulse
~ Explosion
I didn't bother trying to get HP Ice so I am using Dragon Pulse. This set gets the best coverage and is pretty standard. It covers my team's fire weakness quite well and is definitely able to get Flash Fire boosts because of this. Not much else to say except it fits in perfectly with my team.

Vaporeon @ Leftovers
Water Absorb
Bold Nature
EVs: 188 HP / 252 Def / 68 SpA
~ Surf
~ Blizzard
~ Wish
~ Protect
A pretty standard Wisher. Vaporeon also covers my Fire weakness and counters a lot of big threats to my team. It can counter Heatran, Infernape, and other various threats. Blizzard to abuse the hail and Wish/protect for instant healing. Protect is great for scouting and adding up hail damage too. Wish support is great on this team because most of my Pokemon are bulky but lack healing moves.

Zapdos @ Leftovers
Pressure
Bold Nature
252 HP / 220 Def / 36 Spe
~ Discharge
~ Heat Wave
~ Roar / Light Screen/ Thunderwave/ Toxic ?
~ Roost
I needed a Scizor counter and Zapdos definitely fit the bill. I am using discharge for the Paralysis because my team is rather slow. I am still looking for a Zapdos with HP Grass but for now I have Roar. Zapdos is great for helping with my Fighting weakness while also retaining bulkiness with Roost. It has so many resistances that help with the Hail team so it usually comes out early. I need help with a final move to put on it though.

Donphan @ Leftovers
Sturdy
Impish nature
Evs: 252 HP / 6 Atk / 252 Def
~ Earthquake
~ Ice Shard
~ Rapid Spin
~ Stealth Rock
I needed something to set up Stealth Rock and something to spin away rocks. Donphan was perfect. I recently started using him and he's been great. He's able to come in on predicted Stone Edges and set up Stealth Rock against other grounds. Ice shard rapes dragons trying to DD on me. For my hail team its important to keep up hail but Tyranitar can sometimes ruin it. Donphan is a great T-tar counter (physical sets at least) and Rapid Spin makes sure Abomasnow and Zapdos don't lose a quarter of their health upon entry.

Mamoswine @ Life Orb
Snowcloak
Naughty Nature
EVs: 252 Atk / 20 SpA / 236 Spe
~ Blizzard
~ Ice Shard
~ Earthquake
~ Superpower
This thing is a beast. And I think that might be an understatement. This is probably the only true sweeper on my team but he cleans up well. Mixmamo is so unexpected that it usually scores a kill with Blizzard. Peoople try to absorb Earthquakes with Gliscor but end up getting OHKO with Blizzard. First 3 moves provide Stab and priority but Superpower is there mainly for Blissey, Snorlax, and Bronzong (whom otherwise walls me hard). Here's a recent battle on Wi-fi.
Gliscor used Earthquake!
It missed!
Mamoswine used Blizzard!
Gliscor Fainted
Okay so thats my team. All suggestions are welcome as long as they have good reasoning.
Right now I am having trouble with Sleep. I have nothing to absorb sleep so it can really harm my team. Breloom hurts my team a lot but I've got 2 Ice Shards and Heatran to deal with it.