HO Joker Kneeboard BagHO Joker Kneeboard Bag The HO Joker Kneeboard Bag is a padded kneeboard cover designed to protect your kneeboard during transport and storage. A carry strap makes the bag easy to move to and from the water, and the padded body shields the deck and rails from knocks in the boat or vehicle. The cover suits most standard kneeboards and is a straightforward way to keep your board looking new between sessions.