If you've ever had a heavy boat hatch slam down on your fingers, you know exactly why attwood gas shocks are a complete game-changer for anyone spending time on the water. There is something incredibly frustrating about trying to dig through a storage locker or check your engine oil while one-handing a heavy lid that's just waiting to drop. It's one of those minor boat annoyances that eventually turns into a major safety concern if you don't fix it.
I've spent plenty of time on different vessels, and whether it's a sleek bass boat or a bulky cruiser, the hardware holding up those hatches usually goes unnoticed until it fails. Most people don't think twice about their lift supports until they lose their "oomph." If you find yourself propping up your deck lids with a piece of 2x4 or a stray fishing net handle, it is definitely time to look into a fresh set of shocks.
Why these shocks actually matter
It's easy to look at a gas shock and think it's just a simple metal tube, but there is a lot of engineering packed into that small space. These little guys—often called gas springs or lift supports—are pressurized cylinders that do the heavy lifting for you. When you're out on the water, conditions aren't always steady. If you're dealing with a bit of a swell, a hatch that doesn't stay open on its own is a recipe for a bruised hand or a cracked fiberglass gel coat.
The reason so many boaters gravitate toward attwood gas shocks specifically is because they are built with the marine environment in mind. Standard automotive shocks you might find at a local car parts store might look the same, but they aren't usually designed to handle constant moisture and salt. If you put a cheap, non-marine shock on a boat, you'll likely see rust bleeding down your white deck within a month. Attwood uses materials and coatings that are meant to take a beating from the elements, which saves you the headache of replacing them every single season.
Figuring out the right size and force
One mistake I see people make all the time is just grabbing the first shock they see that looks "about the right length." Don't do that. Getting the wrong size is a fast way to either bend your hinges or realize your hatch won't close all the way.
When you're shopping for attwood gas shocks, you need to look at two main numbers: the extended length and the force rating. The length is pretty straightforward—measure from the center of one ball stud to the center of the other when the shock is fully stretched out. If you get one that's too long, you'll have a hatch that won't shut. Too short, and it won't open far enough to be useful.
The force rating is the part that trips people up. It's usually measured in pounds (lbs). If you have a light plastic lid, a 10lb or 20lb shock is plenty. But if you're lifting a heavy, carpeted deck lid or an insulated fish box, you might need 40lb, 60lb, or even more. The goal is to find that "sweet spot" where the lid stays open on its own but doesn't require you to put your entire body weight on it just to get it to close. If you overdo it with the force, you risk ripping the mounting brackets right out of the fiberglass.
The deal with materials and salt air
Since we're talking about boats, we have to talk about corrosion. It's the silent killer of everything mechanical on a boat. Attwood gas shocks usually come in a few different finishes. You've got your standard black painted steel, which is great for freshwater lakes or interior compartments that stay relatively dry. They're affordable and do the job well.
However, if you're running in saltwater, you'll probably want to look into their stainless steel options. Yes, they cost a bit more, but they are worth every penny. Saltwater eats through regular steel like it's nothing, and the last thing you want is the internal seal of the shock to fail because the rod got pitted with rust. Once that seal goes, the gas leaks out, and the shock becomes nothing more than a useless metal stick.
Getting them installed without the headache
The good news is that installing these things is actually one of the easier DIY projects you can tackle on a Saturday morning. Most attwood gas shocks use a standard 10mm ball stud mounting system. You don't usually need any fancy tools—usually just a small flat-head screwdriver to wiggle the retaining clip loose.
Here's a pro-tip that many people miss: pay attention to which way the shock is pointing. You almost always want to mount them with the "rod" side (the thinner part) pointing down when the hatch is closed. Why? Because there's a little bit of oil inside that cylinder designed to keep the seals lubricated. If you mount it upside down, the oil sits at the bottom, the seals dry out, and the gas leaks out much faster.
Also, it helps to have a buddy hold the lid up while you're swapping them out. Trying to balance a heavy engine cover on your head while fiddling with a metal clip is a great way to end up with a bump on your noggin. If you're flying solo, a prop rod or a sturdy piece of wood can act as a temporary helper.
Knowing when it's time for a replacement
Gas shocks don't usually fail all at once. It's usually a slow decline. You might notice that the hatch doesn't pop up as eagerly as it used to, or maybe you have to give it a little extra "help" to get it to the fully open position. Eventually, you'll reach the point where it stays up on a warm day but slams shut when it's cold outside. That's because the gas inside the cylinder contracts in the cold, lowering the pressure.
If you see any oily residue on the thin rod part of your attwood gas shocks, that's a dead giveaway that the internal seal has failed. Once the oil starts coming out, the gas isn't far behind. At that point, there's no way to "refill" them; you just have to swap them for new ones.
Another thing to keep an eye on is the mounting hardware. Sometimes the shock itself is fine, but the ball stud it snaps onto has started to wobble or pull away from the mounting surface. If you catch it early, you can tighten it up or add a backing plate before it tears a hole in your boat's structure.
Small details that make a difference
It's the little things that make a boat feel high-quality. When you have a set of attwood gas shocks that are perfectly tuned to the weight of your hatches, the whole experience of being on the water feels smoother. There's a certain satisfaction in unlatching a compartment and having it gracefully glide open with a soft "hiss" sound. It feels professional, and it makes your gear easier to access when the fishing gets frantic or when you're trying to dock in a hurry.
Plus, it's just safer. I've seen kids get their fingers pinched in heavy lids because the old shocks were shot. For a relatively small investment, you're basically buying peace of mind. You don't have to worry about the wind catching a lid and slamming it shut, and you don't have to worry about your back straining while you reach deep into a locker.
In the grand scheme of boat maintenance, replacing your gas shocks is one of the most rewarding "bang for your buck" upgrades you can do. It doesn't take all day, it doesn't require a mechanic's degree, and you'll notice the difference literally every single time you step on board. If your hatches are acting sluggish, don't wait until they stop working entirely. Take a quick measurement, check the poundage on the side of the old cylinder, and get some new ones ordered. Your fingers (and your back) will definitely thank you the next time you're out on the lake.