March 1, 2008
Fat Sac Tutorial
The Fat Sac a.k.a. FatSac, Phat Sac, FatSax, FatSack, FatSack, Wakeboard Ballast and all related marks and trade dress are the trademarks of Barefoot International, Ltd. and Fly High Manufacturing and/or its affiliates.
What is a Fat Sac?
A Fat Sac is a tube of water used by wakeboarders to add weight to a boat, thus creating a bigger wake.
Having a good wake is the key to enjoying and progressing in the sport of wakeboarding. There are 3 factors that you can control regardless of the type of boat you own.
#1 Front and Rear Weighting
When weighting your boat, it is important to find the perfect ratio of front-to-rear weight. A good starting point is 40% in the front and 60% in the rear. The amount of weight added depends on both your boat and rider’s capabilities. The more weight you add, the bigger the wake will be.
If you have too much weight in the rear, your boat will have more trouble getting up to speed and your wake will be either too steep or rolling over at the peak. If you add too much weight in the front, you might get wake shapes that are too mellow.
Product Tip: Try a full 700lb Sac like this in the back ![]()
and a bow sac like this in the front
#2 Middle of Boat “Balance Weighting”
Balance weighting is crucial to regulating your newly created wake. Now that your boat is weighted in front and back, balance issues will occur depending on your passengers, gear weight, etc. For example, if there are no passengers in the boat, you would need balance weight on the passenger side of the boat to counter the boat drivers weight.
If your boat is balanced improperly, one side of the wake will be foamy and the other side will be perfect. Balance weight should be added to the foamy side to develop the perfect wake.
Lot’s of riders will carry a set of Side Sacs along to fill up and use as balance weighting. These sacs weight about 300lbs and can pulled around the boat to adjust weight as needed.
#3 Water Depth
Water depth plays a major role in shaping your wake. A good wake needs room to develop. If the water depth interrupts this process, the result will be a poorly shaped wake.
The bottom line is that deeper is better. Always try to find water that is at least 10 feet deep.
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