As I said previously - it is better to avoid the Pinnacles from about 15-16 Desember as the sharks seem to have a annual get together there. How long they stay, I'm not sure but I was once told that they gather there to breed (especially the Hammerheads). Whether this is true I'm not sure but other times during the year there are much less sharks and they are hardly a nuisance.Alot of sharks hey lost R700 halcos there in one day.