
Time-Scout |

I couldn't find a Map of windward Isle and eventually searched for a counterpart on Google Earth. It was the Caiman Island which was at least near to the Description and I decided to go one step ahead, building it as a 3D model:
The Rock itself still needs some color, the greens aren't finished yet and it's still lacking some trees and bushes, but my main 'problem' is:
How do you reach the Rock? Via rowboat on a small beach? A small wooden pier?

Time-Scout |

Added more green, a small forest, static grass for bushes and small stones for the coastline.
still struggling with a small pier for a rowboat. I think the scale is to tiny for this. So I have to make it larger than planned.
another option is a half sunken ship, but I have no idea for material that could be used for that..

Laithoron |

I couldn't find a Map of windward Isle...
Did you try looking thru the GM Reference thread for Raiders of the Fever Sea? I posted a map in there about a year ago, but I'll admit it could be easy to miss. Cool 3D realization of the island, btw. :)
Map: Raiders of the Fever Sea (GM Reference)
As far as reaching the rock, by my reading of the description, it's reachable on-foot so long as it's low-tide. During high tide, I believe you would need to swim, fly, or use a small water craft.