This set of two 260 lb ballast bags are great for adding weight in compact compartments such as the ski locker, under seats, or next to direct drive motor.
#W703 - 48x12x12 - 260 lbs. each (Expands to about 350lbs.) - 520lbs total.
The Pro X Series Side Sacs fit along the side of the engine compartment on inboard boats and they will conform to fit under the seats of open bow boats. They are designed to get more weight forward in the boat to balance any ballast you may have back by the engine.