You obviously need to use Meyer Rock as a staging area.

Now, you're probably tempted to attack from the south. But the harbor there is flanked by pillars which will be easy to defend from. What you want to do is go for the jetty on the east side. It will be easy to take since you can attack from three directions. That will give you a beachhead. Then, I would surround the northeastern ridge, which will open up the northern cape for taking. By then, you can launch your second assault in south.