HailStall... Still exists?

I've been a big fan of weather teams for a while, but I don't like the typical rain team or sand team you see all the time... I've loved hail teams for quite some time now and I'd just like some feedback on my UU HailStall team. This is my first RMT by the way. If the following format is incorrect, please forgive me and I will make changes accordingly.

Abomasnow @ Leftovers
Ability: Snow Warning
EVs: 252 HP / 252 Atk / 4 SpD
Adamant Nature
-Protect
-Ice Shard
-Wood Hammer
-Earthquake

The staple to all teams that want to use the hail weather condition. I've taken more of a cautious approach with this set. This set acts primarily as a scouter, protecting to see what my opponent attempts to do, then I can switch accordingly. A secondary trait of this set, is the surprising ability to hit (or even KO) unsuspecting opponents relatively hard.

Xatu @ Leftovers
Ability: Magic Bounce
EVs: 252 HP / 4 Atk / 252 SpD
Careful Nature
-Toxic
-U-Turn
-Roost
-Wish

Xatu is replacing Claydol primarily because a rapid spinner is not needed if I can bounce the entry hazards back at my opponent. This is almost a two-for-one deal as Xatu could also replace Clefable because Xatu reflects entry hazards while also providing wish support.

Slowbro @ Leftovers
Ability: Regenerator
EVs: 252 HP / 252 Def / 4 SpA
Bold Nature
-Psyshock
-Scald
-Blizzard
-Slack Off

Slowbro is replacing Stallrein as the bulky water-type on my team, reducing my previous weakness to fighting even further. Slowbro is superior as a wall over Stallrein because of the resistances it provides and its overall survival thanks to its Regenerator ability.

Porygon-Z @ Choice Scarf
Ability: Download
EVs: 252 HP / 252 SpA / 4 SpD
Modest Nature
-Tri Attack
-Blizzard
-Thunderbolt
-Trick

Porygon-Z is an often underestimated pokemon, being able to plow through almost anything with Choice Specs and its infamous BoltBeam coverage. Trick gives it the option of crippling walls and Tri Attack provides a reliable STAB attack. Not much else to it. Just plow through everything with sheer power.

Nidoking @ Life Orb
Ability: Sheer force
EVs: 4 HP / 252 SpA / 252 Spe
Jolly Nature
-Earth Power
-Fire Blast
-Blizzard
-Thunderbolt

With Xatu essentially replacing two pokemon at once, I decided to take this advantage to cover my Heracross weakness better by adding in Nidoking. Nidoking is a very deadly attacker and resists everything Heracross throws at him, bar Equake, while retaliating with Fire Blast for super effective damage. Nidoking also provides the ultimate BoltBeam coverage with a little more power from Blizzard with perfect accuracy in Hail.

Sableye
Ability: Prankster
EVs: 252 HP / 252 Def / 4 SpD
Bold Nature
-Recover
-Taunt
-Will-O-Wisp
-Night Shade

Sableye is my check to fighting-types, thanks to its immunity and its ability to burn them. No weaknesses provides a difficult time getting rid of this pesky annoyance to opponents. Max defense provides a decent wall to fighting-types and physical attackers in general.

Overall, I think this team is pretty solid. I have lost only a couple times, despite my glaring weakness to fighting types. I'd really love to get rid of that defect in this team. Porygon-Z and Sableye I'd love to keep on this team no matter what changes I might make. Sableye is my check to fighting-types and Porygon-Z has provided near sweeping abilities, taking out atleast two of my opponent's pokemon per game. Would love some feedback on this team overall. Would also love some feedback specifically on what set I should run on Abomasnow for this team. Thanks in advnace!

Not much of a UU player so take this with a pinch of salt.

My initial impression is how weak this team is to Scarf Heracross. He can outrun everything here, laugh at a burn from Sableye is he if running Guts, and everything not named Sableye is weak to one of his STABs. This team needs a Scarfer anyway, particularly one that can eliminate Heracross.

I would suggest Nidoking on this team (Life Orb or Scarf, your call) for several reasons:
1) It speed ties with Heracross
2) Fighting resist!
3) Absorbing toxic spikes
4) Blizzard access
4) Psychic to destroy Fighting-types

Other suggestions: rather than run a rapid spinner you could use Xatu to bounce rocks back (+ Fighting resist x 2). This makes Clefable a little redundant as you can pass Wishes with Xatu, and reflect the opponent's hazards rather than having to set your own.

Probably change Specs Porygon-Z to Scarf.

Bulky Water-type is needed to soak up Fire-type attacks. Amongst these, Slowbro can resist Fighting-types, Blastoise can spin, Alomomola can pass Wishes.

I don't really see the point of running Protect on Abomasnow without Leech Seed. I think Leech Seed belongs on the set somewhere, maybe even Substitute too.

I really like Sableye as a way to check Physical attackers, and to break opposing stall, whilst spinblocking.

More experienced UU players will probably notice other glaring flaws.

Thanks for the advice! Better than nothing.

Updated original post to the team as of right now.

Most Notable changes include:
Xatu replacing Claydol (and also Clefable)
Slowbro replacing Walrein
Nidoking taking over the last spot previously occupied by Clefable
Poryong-Z now Scarfed rather than Specs.

Abomasnow was not changed because of the clutch victories he has provided me with the current set (surprisingly enough).

I'll test this current team for a while, see how it goes. Would love some more advice! Particularly on the advantages on changing Abomasnow's set and if the moveset for Porygon-Z should be modified at all.