Your standard primary
anchor, which is to usually be used alone, should always be a plow type... like the big
Rocna that you've chosen. It should reset 99% of the time. 3/8" HT chain, with an equally as strong shackle to the
anchor, is plenty strong enough.
I agree with Cotemar regarding a secondary anchor, along with a
Fortress. (although I like NERs 12 strand braid a bit better. (Besides our
Delta primary, we carry 3 successively larger Fortresses).
For hurricanes on the hook, you need to prepare for reversal of the
wind, if it is a direct hit. (been there, done that) On my little 34'er, we carried a HUGE
fortress 55, broken down in its bag, for just such an occasion. For hurricanes, you might want to go even larger! For
single direction max holding power, it exceeds even the large
Rocna. You could set the best anchor in the direction of the highest expected
wind, and two more to oppose the biggest storm anchor... In a triangular pattern. HOWEVER...
Your best bet in many places, is to
head for REALLY good shelter. We have tied off like a spider web, in the middle of derelict canals, between docks, up a narrow creek, or our favorite... go WAY up in mangrove forest where you are surrounded by mangroves 40' tall! (Like the Shark River in the Everglades)
Anchoring out in the open for anything worse than a Cat 1 or 2, is really asking a lot of your tackle... Although I did get a sistership to ours through a cat 4, using 3 REALLY big anchors, and at the far end of a 3' deep bayou.
Photos...
Hurricane Ivan, with gusts to 150 MPH! "Just before" and "during" for us, and "the day after" for the sistership I helped put on the hook!
Mark