Tell your party members to wait in Gortok Palehoof's room. YOU run to aggro Skadi. He'll fly and the mobs start positioning themselves. Range/body pull the duo closest to Gortok's room an run back there to reset the event. As soon as the mobs despawn go full speed along with your party to the end of Skadi's corridor and enter the little room where the mobs respawn, just next to the Harpoon Shooters (or wathever they're called).
By this time, Skadi will be back where he starts. Ask someone who can move fast (rogue, mage, hunter, etc) to aggro the boss and run back to the little room. As soon as Skadi flies ALL the fixed mobs of the gauntlet will spawn at the same time. Do your thing to hold'em and let the AoE begin :P
Collect 5 harpoons (be sure that you, the tank, get at least one), take care of the 2 mobs spawn and shoot 4 times in the dragon. Wait for him to fly high again, kill the last 2 mobs, ask for everyone to run a little back (away from the shooters) in the corridor and shoot the last harpoon. Pick him up, announce his WWs (Disarm helps a lot here), make sure the poison gets cleansed and you should be fine
The hardest part it's to have your party members learn to stay max range (rangeds/healer) or when to run during Whirldwinds. Taunt is golden when his about to reach your party