Do it! i ll come find you i need an adventure! or we can be island mates. like the book the beach i did something like you want to do, but not on an island, just out in the idaho wilderness one summer for 3 months, it was amazing. DO IT DO IT
You would need to be responsible and let someone know your whereabouts,otherwise it could cost the Country thousands of dollars in searching. let alone the heartbreak it could cause for family . By all means go and take a break on an island but remember someone owns it and if no one lives there then it is inhospitable. You would need good weather and be equipped with spades fishing gear tarpulin for cover from sun , you would need to be very hardy and what if you where sick or needed help . Do you just die there all alone. Do you pull your own teeth if needed . Cover your wounds from infection. And where do you get adequate food for nourishment . you can t survive without fresh running water
definitely