The Boat Hook is a consumable in FarmVille. Players needed to collect this item as part of the Water Fortune, the hidden treasures on the Jade Falls (farm) to reveal a hidden treasures on water part of Jade Falls (farm).
Small Water Fortune requires 5 to reveal treasure.
Medium Water Fortune requires 14 to reveal treasure.
Large Water Fortune requires 25 to reveal treasure.
Extra Large Water Fortune requires 42 to reveal treasure.
It can be bought from the Market at a cost of 2 cash for single Boat Hook. There is also other packs with more this consumables - pack of 5 Boat Hook cost 10 cash and pack of 15 Boat Hook cost 30 cash.