Island life

You construct a boat with about 20 wooden boxes tied together with wood and you put it in the water. You get on the raft and set sail North east. after 10 minutes of travel you look back and see only the glint of the boat under water. You look forward and see an island about a half mile ahead and as you start swimming toward it you see a tentecal flick out of the water and a huge octopus comes out of the water

You have 2 choices: