Hail Team In Progress

A little history. I played Gen 1, Gen 2, quit for years and started playing again with Black 2. Wanting of course to be competitive I started challenging other people. Without much time I noticed weather teams were very popular. I learned that Hail is my favorite and not only is it my favorite it also appears to be the least used. If there is something to master early it might as well be the hardest. I will apologize that I don't have pictures, all internet usage I have is on my cell phone and through 3DS.

Abomasnow @ Choice Band
Snow Warning
Adamant Nature
172 HP / 252 Att / 84 Spe
- Wood Hammer
- Ice Shard
- Earthquake
- Focus Punch

This is an obvious choice so I guess all we have to talk about is the build. This build is mostly just for taking out the other weather starters. It does really well against Politoad and Tyranitar while it can take out Ninetails as well just not as easily. This build is to maximize it's attacking ability. Item and all allows for successful faints to win the weather war. The only question I really have about this build is my fourth skill. A friend told me to use it but I've never actually used it in battle. But as I've never used it, I also don't feel I've missed anything else.

Froslass @ Leftovers
Cursed Body
Timid Nature
252 HP / 252 Spe / 4 SpA
- Spikes
- Taunt
- Blizzard
- Destiny Bond

This here is my sacrificial lamb. It's primary purpose is to be my spin blocker. The skills are meant to take the enemy spinner down with me. I feel a Spin Blocker for a spinner isn't a bad trade. Spikes seemed a fitting choice as it is nowhere else on my team and if you can, why not? The last skill Blizzard is just a powerful STAB attack with 100% accuracy in Hail.

Tentacruel @ Black Sludge
Rain Dish
Bold Nature
252 HP / 236 Def / 20 Spe
- Scald
- Toxic Spikes
- Rapid Spin
- Protect

This here is my spinner of choice. I have already replaced Forteress with this Pokemon as I feel this fits better as my spinner. I've heard Starmie is another potential opinion but I feel that Toxic Spikes support is more useful than Thunderbolt support Starmie would provide. Also the Black Sludge heals Hail damage while leaving Leftovers open to use elsewhere. Rain teams also have to think twice about changing the weather as the ability allows for 12% healing a turn without Hail and with Protect this can really add up.

Cloyster @ White Herb
Skill Link
Naive Nature
252 Att / 252 Spe / 4 SpA
- Shell Smash
- Icicle Spear
- Rock Blast
- Hydro Pump

This here is one of my power houses. This is primarily my physical attacker. While fitting the theme, taking no residual damage, has good STAB attacks with the extra EV going into SpA for a slight boost to Hydro Pump. I have been thinking about replacing this with Mamoswine but I have not trained nor tested a Mamoswine yet.

Kyurem @ Life Orb
Pressure
Timid Nature
252 SpA / 252 Spe / 4 HP
- Blizzard
- Draco Meteor
- Focus Blast
- Roost

This here is my baby. I am currently using regular because I lack a special attacker that takes advantage of Hail. This build is relatively straightforward. Maximizing special attack and speed to be as fast as possible and do as much damage as possible. I don't feel there is much need for added bulk or defenses due to it's already high stats. I feel my skill choices give good coverage and Roost extends longevity. My baby here usually stays safe until Mid/Late game where it's either make or break.

Heatran @ Expert Belt
Flash Fire
Modest Nature
252 SpA / 252 Spe / 4 HP
- Flamethrower
- Earth Power
- Dragon Pulse
- Stealth Rock

Now this is going to sound strange but funnily enough this was my last addition to the team. I am now aware this is a staple on Hail teams and understand why. This is where my Fire/Dragon support comes from. Granted on a Hail team it isn't hard to find a check to Dragons. With 100% accuracy Blizzards flying around this Pokemon primarily assists me with Fire support and the much appreciated Stealth Rocks.

Please assist me with ANY changes. As I have it now it's decent. I feel it's relatively balanced without much defense. Weather Starter, Spinner, Spin Block, Attackers with Heatran on support. Also I have all entry hazards at my disposal.

As a last note, I do believe this team classifies as OU and meets all rules including the Item Clause.

If Froslass is using Lefties, use the EV spread of 248 HP/8 SDef/252 Spe.

Forretress has a serious case of 4-moveslot syndrome; it needs a coverage move alongside Volt Switch to prevent it from being total Taunt bait. Specially defensive Forretress doesn't do as well as physically defensive variants, as Forretress still takes loads of damage from Special moves regardless:
-Spikes/Stealth Rock/Toxic Spikes
-Rapid Spin
-Volt Switch
-Gyro Ball/Hidden Power (Ice)
Nature: Relaxed/Bold
EVs: 252 HP/252 Def/4 SDef
Item: Leftovers
Ability: Sturdy

Another Rapid Spinner you can consider instead is Tentacruel or Starmie because of their Fire and Fighting resistances:
-Scald
-Rapid Spin
-Toxic/Toxic Spikes
-Protect/Substitute
Nature: Bold
EVs: 252 HP/236 Def/20 Spe
Item: Black Sludge
Ability: Rain Dish

Starmie:
-Hydro Pump/Surf
-Blizzard
-Thunderbolt
-Rapid Spin
Nature: Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Leftovers
Ability: Natural Cure

Cloyster's preferred item is White Herb to negate Shell Smash's defensive drops.

You really need a 'mon that can check Fire Pokémon well, like Heatran or Chandelure:

Heatran:
-Lava Plume
-Stealth Rock/Roar
-Will-o-Wisp/Toxic
-Protect
Nature: Calm
EVs: 248 HP/252 SDef/8 Spe
Item: Leftovers
Ability: Flash Fire

or
-Fire Blast
-Earth Power
-Hidden Power (Ice/Grass)/Dragon Pulse
-Stealth Rock/Flame Charge/Taunt/Substitute
Nature: Timid/Modest
EVs: 252 SAtk/4 SDef/252 Spe
Item: Air Balloon/Leftovers
Ability: Flash Fire

or
-Overheat
-Flamethrower
-Earth Power
-Hidden Power (Ice)/Dragon Pulse
Nature: Timid/Modest
EVs: 252 SAtk/4 SDef/252 Spe
Item: Choice Scarf
Ability: Flash Fire

or
-Overheat/Fire Blast
-Earth Power
-Dragon Pulse
-Hidden Power (Grass)/Flamethrower
Nature: Modest/Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Choice Specs
Ability: Flash Fire

Chandelure:
-Fire Blast
-Shadow Ball
-Hidden Power (Fighting)
-Trick/Energy Ball
Nature: Modest/Timid
EVs: 252 SAtk/4 SDef/252 Spe
Item: Choice Specs/Choice Scarf
Ability: Flash Fire

Okay so potentially change my spinner and add Heatran or Chandelure to my last open spot. My problem is what would be best to support the team I have?

Like do I just change Forretress move set or just swap it out for a different spinner. Also would Heatran or Chandelure be better support for this team. I do notice that if I used Chandelure I would have double spin blockers but with Heatran I could get Stealth Rocks. Of course Heatran with Stealth Rocks is implying I am changing my spinner to one without the skill. This is so complicated lol.