Hey Redcape, I'm wondering how accurate you feel your modeling of Hurricane is in your spreadsheet. I remember in the old 4.0.1 thread you mentioned that Hurricane was trash, but also said you made some assumptions about it (I believe I remember you saying that you were assuming it worked like landslide and was 1 PPM).
The reason why I'm asking is partially because of the discussion going on in the current ret thread about being able to proc it from both melee and spells separately, and also because of my logs from my raid last night (I've been trying out hurricane, since getting a landslide enchant isn't very feasible at the moment):
World of Logs - Real Time Raid Analysis
You'll notice if you go to buffs gained that I gained the Hurricane buff 24 times in a 4 min 38 second fight, for a 59.1% uptime, which would certainly not point to something like 1 PPM (since the buff only lasts 12 seconds). Indeed it would seem that it's very possible to get a new hurricane proc while the old one is still active, refreshing it (if I had 24 separate procs for 12 seconds each, that amounts to 4 mins 48 seconds, which is longer than the fight duration so that certainly can't be right).