Fat Sac attach point repair

Ribs77 · Sep 6, 2025

WELP. The lake was a-rocking with wakes from other boats and evidently I didn't have my fat sac secured well enough, because this tie-down point broke and the bag fell in the water.

Fortunately all of the seams held, I'm actually kind of shocked. And I think this might be repairable.

I was considering using surfboard epoxy to glue this back in, but the internet seems to think epoxy won't stick to plastic. Now I'm wondering about using regular superglue or maybe some 5200 or fast cure sealant (like I used to seal my intake tunnel) to repair this piece.

What do we think is my best bet?

Aqua Jetaway · Tuesday at 7:55 PM

I see that no one has waded in with a response. I suspect that’s because none of us wants to tell you that there’s no good solution.

Ribs77 · Tuesday at 8:07 PM

Haha, it's OK. I figured out a better way to secure the bag without using that attach point.

I got some adjustable flat-side bungies and I wrap one of them AROUND the bag and then hook each side to a rear cleat.

Then I use two regular bungies to go from the bottom attach points to the lower tow cleat. (I place the transom bag in the middle of the transom and adjust the surf-side wave from regular to goofy with two 50lb lead bags in the surf-side compartment.)

This setup works way better so far. I'll post a pic of it next season, but the boat is tucked away in a barn for winter now.

Aqua Jetaway · Tuesday at 8:29 PM

I like your approach to put the bag in the middle. I’ve tried to do the same thing with a 750lb bag on a 2019 212X. I haven’t been comfortable with the results so far, but your explanation/experience gives me hope. I’ll try some new approaches next year.

Ribs77 · Wednesday at 8:43 PM

I've been pretty happy with the results, but I still have to do some dialing depending on how many people I have in the boat.

With 3-4 adults I just do the big 650 or whatever transom bag in the middle, the 100lbs of lead in the rear surf side compartment, and a long bag above the ski locker filled to probably ~270-300lbs.

Gives me waves like this:

Aqua Jetaway · 2025-11-06T07:45:06-0500

Looks good! My challenge with transom bag placement in the middle is just keeping it there. The dang thing just moves to easily. I bought a cargo net to try to control it better. Seems like it should work, but the dang thing just wants to flop over.

This picture shows it in the corner, but I started by trying in the middle. I got a bit tired of setup, so I just spent my time on the wakeboard this summer. My wakeboard skills improved a lot, but I’ve still got a ways to go.

Ribs77 · 2025-11-06T12:14:05-0500

Ah, I think the first problem is that your bag isn't full enough. It's a lot more stable when it's totally full.

There's no real danger of overfilling - the seams aren't going to burst. I'd try filling it until those corners are pretty taut and see if that improves the stability.

Aqua Jetaway · 2025-11-07T10:50:07-0500

Ribs77 said:
Ah, I think the first problem is that your bag isn't full enough. It's a lot more stable when it's totally full.

There's no real danger of overfilling - the seams aren't going to burst. I'd try filling it until those corners are pretty taut and see if that improves the stability.

Looks like I’m done for this season, but I’ll give it another go next year.

Fat Sac attach point repair

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Aqua Jetaway

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