I think I had one post left to do but just couldn't be arsed with it 
I got bored a long time before that. I gave up about ten percent of the way into the second island. But I was particularly thorough on the first island. Skinned everything that moved.....probably twice.
My problem was I spent so much time dossing about (trying to see how many things I could jump a jeep off of for example) that the first island probably took me 30 hours. Other pastimes included:
Trying to run tiger over with jeep.
Trying to outrun said tiger in jeep
Trying to run bear over with jeep.
Trying to run shark over with jeep.
Etc. etc.
Good times!