No one explained to Will Asher that he needed to have a V Drive boat to wakesurf. Well do you? Mr. Asher recently loaded up his new Malibu LXi with a couple of friends and the wake was definitely surfable. Consider this, there isn’t any stock ballast nor is he using the Malibu wedge. By looking at the picture above we are guesstimating there is around 1000 lbs. of displacement. With the correct distribution of weight, the wake could be much better.

One question we often receive at Wakemakers is… “How much weight do I need to surf behind my direct drive water ski boat?” The answer is eight friends, but those friends aren’t always available. They can easily be replaced with a ballast bag, four to seven minutes of your time and $230 to $300.00.

There are a couple things to consider when weighting a direct drive ski boat. Most importantly determine how to best use the limited seating space available as you don’t want a visit from your local authorities when passengers are not sitting inside the boat. Keep in mind that you will want to seat everyone on the surf side of the boat and don’t be afraid to send passengers to the bow. As you distribute weight towards the bow, the sweet spot of the wake will get longer and will allow the rider to surf further away from the back of the boat.

We suggest placing the ballast sac next to the engine compartment as far back as possible on the surfing side. The optimal sacs for this location are the Fly High V-Drive Surf Sac (450 lbs.), the Fly High Fat Sac (750 lbs.), the Fly High Jumbo Surf Sac (1100 lbs.), or the Fly High Ultimate Wake Surf Sac (1000 lbs.). Remember that your ballast bag doesn’t need to be completely full. Choose a bag with the most weight you would ever need. You can always remove weight but there will be a limit to the amount that can be added.

When you find the perfect Fly High Ballast Bag don’t forget to grab the Fly High Tsunami Ballast Pump. With it’s quick connect  fitting system and unmatched flow rate of 150 lbs. of water per minute, you’ll be riding faster than ever before.

Included in the savings are some Fat Sacs, V-Drive Sacs, Rear Seat Sacs, and even some Inboard Surf Sacs and an Enzo Sac (there’s only one of those, so get on it).  We’ve also got a whole slew of Tsunami Ballast Pumps that are deeply discounted.  These savings are first come-first served, so head over and take a look if you’re up for getting double the ballast for your dollar.

If you have any questions about what ballast might be best in your boat, feel free to contact us.

This seems to be a popular topic lately, both on the forums, and for our ballast experts on the phone, so we figured it would be beneficial to write a full guide on how to design a ballast system around a reversible impeller style ballast pump. As usual, there are multiple ways to accomplish the same goals, so this shouldn’t be taken as the definitive guide on ballast system installations, but rather a recommendation on how to install a fully functional system that operates correctly based on our years of experience. Feel free to deviate from these plans where you see fit, or contact us if you any questions.

With that out of the way, let’s move on to the good stuff!

The Basics
Impeller style pumps (like Jabsco’s Ballast Puppy) are unique because they can pump water in both directions, which means you can use one pump to both fill and drain the same ballast bag(s). Additionally, impeller type pumps act as a check valve when not running, preventing the flow of water into or out of the bag which simplifies the design of the system.

Design and Layout
In general, all ballast systems that make use of reversible pumps will have the following principles in common, although the specifics may vary from one installation to another depending on the applicable goals or constraints.

The system design we’ve outlined in this article does use one check valve fitting which allows the water being pumped out of the bag when draining to exit the boat above the water line. This is a popular option for many people because it results in a visual and audible indication of when the bag is draining, and when it’s empty. Alternatively, removing the check valve, wye fitting and attached thru-hull vent will result in a simpler and cheaper system that fills and drains through the thru-hull intake fitting.

Water Source
Regardless of the specifics of the system, you will need to find a source of raw water to use to fill. This can be a dedicated intake fitting installed specifically for the ballast system, or can make use of an existing drain plug fitting in the bilge using our available brass integration fittings. We DO NOT recommend using the engine’s raw water intake as the source of water for your ballast system. The risk of damage to the engine is not worth the small amount of convenience during the installation.

Pump
This system makes use of a reversible impeller type pump manufactured by Jabsco. Their Ballast Puppy pumps are incredibly popular in this industry, being used by Mastercraft, Nautique, Supra, Moomba, Centurion and others in their factory ballast system.

Plumbing
The specifics of your installation will depend on your particular boat, but the basics outlined here are generic regardless of the boat.

Immediately after the thru-hull intake fitting install a brass ball-valve as an emergency shut-off point to allow you to immediately stop the flow of water into the boat if something goes wrong.

If you choose to implement a system that drains above the water line, next install a check valve fitting to prevent water from draining back through the intake.

Next is Wye fitting to redirect the flow of water out the thru-hull vent fitting when draining.

Then comes the pump, and finally you can make your connection to the bag. Because reversible pumps fill and drain through the same bag connection, you only need two connections to the bag, one for filling and draining, and one for venting. We recommend using Fly High’s Flow-Rite Quick Release Connector system for all bag connections so that you can quickly and easily remove the ballast bags for cleaning, winterization or storage.

Both the drain and vent hoses are terminated with thru-hull vent fittings that match the factory style.

Here is a summary of the parts used in this single bag system, along with an approximate cost for a system of this type. Obviously the total cost will depend on which bag you choose, whether or not you implement the above water line drain, and a host of other factors. If the cost is of concern to you, contact us and we can help you locate ways to save some money.

Hopefully you found this article informative, and it helped to answer some of your questions regarding wakeboard ballast systems using reversible pumps. If you have any other questions, or would like help designing a system to meet our specific needs, please contact one of our ballast experts and we would be glad to assist.