Dragonite doesn't fit Hail teams nicely. In fact, it doesn't fit Hail teams at all since Hail removes Multiscale. In fact, that makes it outclassed by Kyurem completely. Froslass is incredible under Hail, and Aeromence seems to have found the perfect set for it. This team isn't mauled by Arcanine at all - Terrakion is a solid counter, resisting Flare Blitz (if you switch it in) and threatening it with Stone Edge or Earthquake. Heck, Froslass can beat it too if it Disables Flare Blitz. I do agree that Dugtrio is a problem, but it can't really be overcome without skillful playing.
I would like to back Leech Seed over Earthquake on Abomasnow though - taking a Seed to the face can be just as debilitating as taking an Earthquake. It'll help you with a lot more as well.
Also, way to rip off my username for your team. lol