Deep6 Eddy Fins Review
I used the Deep6 Eddy fins during GUE Fundamentals with a drysuit and steel backplate. They delivered precise control and neutral buoyancy in freshwater, but their stiffness contributed to leg fatigue on longer dives. I switched to softer OMS Slipstreams without finding a meaningful loss of control.
By Tyler Allison
ยท Updated July 2025
- Use
- GUE Fundamentals and drysuit diving
- Configuration
- Drysuit with a steel backplate
- Still in my kit
- No
The Short Version
The Eddy fins gave me precise control during skills-focused diving, but their stiffness became tiring on longer dives. I eventually moved to the softer OMS Slipstreams for drysuit use because I did not find the Eddy's control materially better enough to justify the extra fatigue. They are not the casual, all-around travel fins I would choose for myself.
Would I buy them again? No.
What Works
- Precise frog kicks, back kicks, and helicopter turns
- Stable positioning and trim control during skills
- Neutral buoyancy in freshwater in my use
- Easy donning and doffing
- Solid construction without delamination or material fatigue
What Doesn't
- Stiffness contributed to leg fatigue on longer dives
- Flutter kicks felt heavy over time
- Control was not materially better than my softer Slipstreams
- Not my choice for relaxed recreational or travel diving
How I Used the Eddy Fins
These were the fins I used during my GUE Fundamentals class, diving a drysuit with a steel backplate. Their stiff blades worked well for back kicks, turning, and holding a stable position in trim.
That control was useful in training, but extended diving exposed the tradeoff for me. I experienced leg fatigue and eventually switched to OMS Slipstreams for drysuit dives.
What It Is Like to Dive
- Trim and Buoyancy
- The fins were neutrally buoyant in freshwater and gave me good trim balance without adding much ankle-weight effect.
- Precision Kicks
- Frog kicks, back kicks, and helicopter turns were strong points. The feedback was predictable, and I could hold position for skills.
- Flutter Kicks and Fatigue
- Flutter kicks felt heavy over time. The stiffness that helped with control also made longer dives more tiring for my legs.
- Handling
- They were easy to put on and take off, but the stiff blade required deliberate kick technique. Their useful control did not make them feel forgiving during relaxed dives.
Why I Switched to Slipstreams
The Eddy's control was excellent, but in my use it was not materially better than the softer OMS Slipstream. The difference that mattered was how my legs felt over a longer dive.
I wanted to keep precise positioning without paying for it in fatigue. Moving to the Slipstreams worked better for my drysuit configuration, which is why I would not buy the Eddys again.
Construction and Value
The construction was solid, with no signs of delamination or material fatigue in my use. My reason for changing fins was how the stiffness affected me, not a durability problem.
The mid-range price offered good performance for skills-focused diving. I also liked Deep6's direct-to-consumer approach, but neither the price nor the construction changed my preference for a softer fin during longer dives.
Who They Make Sense For
They are worth considering for divers who specifically want a stiff, neutrally buoyant fin for precise control, including skills-focused training such as GUE Fundamentals. That is the role where I found their strengths most useful, rather than general-purpose vacation diving.
I would choose something else for relaxed travel dives or if stiffness and leg fatigue were already concerns. The original review also identified skills-focused wetsuit use as a possible fit, but my firsthand account here is from drysuit diving with a steel backplate.