I've had a good experience with forks from this guy on eBay. Bought a set that will "pivot" on the ground plus has the holes for the "backstop" boards. Quite a bit cheaper than the Payne's. Haven't had them long enough to say how well they hold up though. 
eBay Store - bucket forks skid pallet tractor kubota new holland loader: forks single clamp-on adjustable pallet bale hay
eBay Store - bucket forks skid pallet tractor kubota new holland loader: forks single clamp-on adjustable pallet bale hay
