Custom Ballast Bags: A Step-by-Step Guide to Measuring Your Boat for the Perfect Fit

How to Measure Your Boat for Custom Ballast Bags

custom size ballast bag

Improve Your Wave with a Custom Ballast Bag for Your Wakeboat

Ballast bags are an essential component of a boat's wake system, adding weight to the boat and creating a larger, more powerful wake. The right ballast bags, properly placed, can greatly improve the performance of your boat and make it easier to achieve the perfect wake for surfing, wakeboarding, or any other water activity. Whether you are an experienced boat owner or a beginner, investing in custom ballast bags can make a significant difference in the quality and shape of your boat's wake. With the ability to be tailored to your dimensions and needs, ballast bags are an excellent option for anyone looking to enhance their boat's performance.

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What is a CustomFIT Ballast Bag?

CustomFIT ballast bags are the perfect solution for boat owners looking for a bag that fits their boat perfectly, maximizing the ballast weight and output. Our CustomFIT process allows you to supply us with your desired dimensions, so we can create a bag specifically for your needs and the wave you'd like to achieve. This is a great option if we don’t have ExactFIT or DirectFIT bags already patterned for your boat.


CustomFIT bags offer the ability to optimize the fit and capacity for your specific application. Whether you’re looking to add extra batteries, subwoofers, or want to keep some space on top of the bag for gear, CustomFIT bags allow you to do that. We’ve even made CustomFIT solutions for the back of trucks and RVs for storing water.

CustomFIT bags come with a small extra charge, but it is affordable for what you are getting – a truly one-off custom bag. Our engineers and craftsmen can pretty much do anything you can dream up, so the possibilities are endless.

How to Measure Your Boat for a Custom Ballast Bag

When deciding to go with CustomFIT, questions about how to measure your boat will inevitably arise. Our online tool on allows you to enter basic dimensions, get a quote, and place an order all in real-time. Alternatively, you can get in touch with our Product Advisor who can help you walk through the process. You can be as detailed as you want with your dimensions and get as specific as you want. You can make a rectangle or follow the contour of your boat – the choice is yours.

In case you have any features in your locker compartment that might impact your bag measurements, we recommend the following:

  • If you have a feature that you won't need to access while the bags are filled AND is not sharp, you can measure the full length of the compartment. Ballast bags are not rigid; they will conform to the space around them.
  • If you have a feature that is sharp or pointed, the measurements will need to be adjusted to take into consideration avoiding pressure on the ballast bag so it does not get damaged.
  • If you have a feature that is either sensitive to weight (i.e. a hydraulic lift) or something you may need to access while the bags are filled, we can work with you to get appropriate dimensions for your compartment to keep this space free.

In conclusion, CustomFIT ballast bags are the perfect solution for boat owners who want a bag that fits their boat perfectly. Our CustomFIT process is affordable, and you can get as specific as you want with your dimensions. If you have any questions or concerns, our Product Advisor is always here to help. Reach out at (888) 338-6085 or

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