Can't bump this post any harder! 5 minute got the belt.
Looniper says:
Thumb a ride from a magus to South Ro.
Go North til you come to the Lake (previously in oasis).
Go to the shore and follow the Left side of it(water on your right) til you come to 4 orcs standing near the water's edge standing at roughly even spacing.
These 4 orcs respawn in seconds after being killed, and appear to have a much higher raw-hide drop rate than the other orcs in the zone.
Belts, Gorgets, and Arms are the rare pieces, but the drops are so frequent and the orcs' fast respawn mean you can find any piece within 10-15 minutes at the longest.minutes.