Been through a few leggies riding my 12 ft PSH lately.

I know it is a big board but still these leggies should hold on better.
They seem to be breaking at the ankle strap and rail saver only as that is the weakest spots due to the joins.
Been a mixture of 10ft creatures of leisure and Da Kine thick 10/8 mm cords. Have managed to MacGiver the Da Kine for the meantime till a reliable replacement is found.
Surf has been no bigger than 4ft and have both broken after bailing in front of a closeout set.
Anyone recommend a good strong reliable leash for a 12 ft surfing board??