More recent research suggests makos grow much slower than previously thought, making them much more prone to overfishing than initially suggessted - meaning current legislation and management policies are seriosuly flawed. Studies also indicate that while population numbers are reasonably stable, the average size of Makos are declining. When you combine a decline in the age and size of individuals in a population that has a slow sexual maturation (4 years), a long gestation period (18 months) and relatively few young that are born, the logic is pretty clear that a sharp drop in population nunmbers is looming once the average age of the population falls below the age needed to at least replace the existing population numnbers (about 6 years minimum).
To make it worse, female makos are larger than males which means they are then more likely to be targeted by trophy fishermen. I am aware of no other sustainable wildlife management policy that would target prime breeding age females, except for short periods of time in cases where a given population has exploded in numbers and grossly exceeds the carrying capacity of tghe environment. In most cases, management polices seek to target males and protect breeding females as any other policy results in a drop in population.