Ultimate Wakesurf Sac (W718) Ballast Bag
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FATSAC Ultimate Wakesurf Sac (W718) Ballast Bag
The FATSAC Ultimate Wakesurf Sac (W718) is an oversized, L-shaped ballast bag engineered to produce the most powerful surf wake possible behind any direct drive or V-drive inboard boat. After filling your factory ballast and any other sacs that occupy the front and rear compartments of your boat, simply place this sac on top of the rear seat and side seat on the side you are wakesurfing. The sheer volume of water it displaces means even beginners can wakesurf effortlessly behind your boat — no experience required to get up and riding.
The distinctive L-shaped design is intentional: when the sac is full, its geometry prevents it from rolling off the seat, keeping it securely in place throughout your session. When filling or emptying, hold the sac up on the seats to avoid any unwanted movement. The flexible construction also allows the sac to conform to other boat types and locations, making it a versatile ballast solution beyond its primary application.
Important safety tip: give the boat extra throttle when passing through wakes created by this sac setup to bring the bow up and avoid swamping, as the ballast load is considerable.
Key Features
- Massive 1,150 lbs. / 520 kg ballast capacity for maximum surf wake performance
- L-shaped design places weight precisely where needed and stays in position when full
- Body dimensions: 60" x 24" x 16"; Arm dimensions: 35" x 12" x 16"
- Compatible with FATSAC Tsunami Pump — no conversion parts or adapters needed
- Flexible PVC construction conforms to various boat types and seating configurations
- Made in the United States of America
- Available in Gray (standard — no surcharge or shipping delay)
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