I do a bit of duck herding from pen to pen or from pond to duck house. Any thing long works a 20 foot Joint of pvc 3/4 inch works well for me ,it makes your arm span that long to guide them in with. I even slap the pond with it to get them out also ..For Little ducklings its nice to have some 8 to ten inch wide and 4-10 foot long boards set on their long sided edge to make a path with. You will also need some stakes to hammer in ground so boards do not fall over . With Juve or adult ducks a dog that knows and obeys the commands lay down sit and "stay" can be a big help also . a dog that does not obey your commands it just turns into a rodeo. And your better off herding ducks with out their help.