I tlooks as if Dennis will hit just to the west of where my boat is
docked at a marina. This is the first time I have been in a marina
during Hurricane season and have always in the past been at pvt docks
where I could tie off to many things. At the Marina, I am at a
floating dock that could float free with a 10' surge. I cannot put a
line across the canal without blocking it. My location is well
protected from wind but not surge. Hauling is not an option as the
nearest lift is 35 miles away and only works about 30% of the time.

Boat is facing North with dock to North (parallel to the land) and
finger pier to east. Pilings at stern. Wind will mostly be out of the
south blowing her toward the shore. How about this:

Attach a large pulley to the pilings at stern. Attach lines to stern
cleats, run them through the pulleys and then reverse their direction
taking them over (or maybe under) the floating dock to anchors ashore.
That way, wind pushing boat toward shore will be pulling on the anchors.