Last year when Earl was predicted to possibly come ashore in NJ I took a vacation day and tied down my Etap 26, which currently has the keel removed, so it floats real easy. I've seen 6 inches of water under my boat in a Noreaster, so the hurricane really worried me.
My tie down was 4 large screw anchors sunk 3-1/2 feet deep with two 3" wide flat nylon slings over the boat. I felt kind of stupid when the hurricane never arrived. I felt a little better when the yard guy told the last time a hurricane went through they recovered boats from yards all around the marina.
Now here it what sucks, I took the straps off while working on the boat this summer. Somebody actually unscrewed and stole the anchors!
Gary H. Lucas