ok well i did a search and didn't see this, if its a repost then i didn't see it when i was looking in a 1 page search
ok well heres what me and my guild does in heroic UP on the gauntlet event.
we go and start it but we run back in the trophy hall and wait for it to reset and we run to the end before the boss respawns, one person waits at the end to restart the event while everyone else is that the harpoons and no fighting down to the harpoons and you get the harpoons as you fight and in general it takes less then 2 minutes and no one dies.
sorry for wall of text.