Common Hose Routing Mistakes in Sidemount

The Problem Often Isn’t the Hose Length
Mistake #1: Routing Hoses Based on Appearance
Mistake #2: Excessive Hose Loops
Mistake #3: SPGs Hanging Everywhere
Mistake #4: Routing That Changes Cylinder Position
Mistake #5: Long Hose Deployment Problems
Mistake #6: Copying Someone Else’s Setup Exactly
Mistake #7: Ignoring Stage Cylinder Interference
Mistake #8: Overcomplicating the System
Mistake #9: Failing to Test Changes in the Water
The Goal of Good Hose Routing
Final Thoughts

The Problem Often Isn’t the Hose Length

When divers experience problems with their regulators in sidemount, the first thing they often blame is hose length.

  • The hose is too long.
  • The hose is too short.
  • The hose needs to be replaced.

Sometimes that’s true. But more often, the real issue is routing.

I’ve seen divers with perfectly appropriate hose lengths struggle because the hoses were routed poorly. I’ve also seen divers with less-than-ideal hose lengths dive comfortably because the routing was clean and efficient.

Hose routing affects far more than comfort.

It impacts:

  • streamlining
  • task loading
  • regulator deployment
  • gas sharing
  • entanglement risk
  • and overall equipment management

Good hose routing disappears into the background. Bad hose routing constantly demands attention.

Mistake #1: Routing Hoses Based on Appearance

One of the most common mistakes is routing hoses because they “look clean” on the surface. Unfortunately, surface appearance and underwater function are not always the same thing.

A hose that appears neat on the bench may:

  • pull when turning your head
  • interfere with clipping cylinders
  • snag during stage handling
  • complicate regulator deployment

The goal isn’t to make the harness look good. The goal is to make the system work efficiently underwater.

Mistake #2: Excessive Hose Loops

Some divers try to hide excess hose length by creating loops. While this may reduce clutter visually, it often creates new problems.

Extra loops can:

  • catch on equipment
  • trap stage cylinders
  • snag guideline markers
  • interfere with regulator deployment

Every unnecessary loop increases complexity. Simple routing is usually better routing. This isn’t to say that loops are never acceptable. However, loops that are used to compensate for an excessively long hose can create issues.

Mistake #3: SPGs Hanging Everywhere

SPGs are one of the biggest sources of clutter in sidemount.

Poor routing often leaves them:

  • dangling below the diver
  • swinging freely
  • catching on equipment
  • requiring constant adjustment

SPGs should remain accessible without becoming an underwater pendulum. If you are constantly repositioning your SPGs during a dive, something in the routing probably needs adjustment.

Mistake #4: Routing That Changes Cylinder Position

Your hoses should adapt to your cylinder position. Your cylinder position should not be dictated by your hoses.

When hoses are not long enough, they can:

  • pull cylinders out of trim
  • affect attachment points
  • alter regulator positioning
  • limit the ability to push cylinders ahead when going through restrictions

This often creates a chain reaction where divers start adjusting multiple parts of the system to compensate for a routing problem.

Mistake #5: Long Hose Deployment Problems

A long hose that cannot deploy cleanly serves little purpose.

Common issues include:

  • hose trapped behind equipment
  • hose wrapped incorrectly
  • hose snagging during deployment
  • unnecessary routing complexity

Gas sharing situations should not require troubleshooting. The hose should deploy smoothly and predictably every time. If deployment is inconsistent, revisit the routing.

Mistake #6: Copying Someone Else’s Setup Exactly

One of the most common mistakes in sidemount is assuming another diver’s hose routing will automatically work for you. Every diver is different.

Factors that influence routing include:

  • body size
  • cylinder type
  • harness design
  • wing configuration
  • exposure protection
  • stage cylinder use

What works perfectly for one diver may create frustration for another. Use proven concepts. Then customize them to your own configuration.

Mistake #7: Ignoring Stage Cylinder Interference

Many routing issues don’t appear until stages are added.

A setup that works perfectly with two cylinders may become problematic when carrying:

  • one stage
  • two stages
  • or additional equipment

When evaluating hose routing, consider how the system functions during the entire dive, not just the beginning. A hose that works without stages may become problematic once additional cylinders are introduced.

Mistake #8: Overcomplicating the System

Some divers continuously add:

  • clips
  • retainers
  • loops
  • routing devices
  • accessories

to solve routing issues.

Sometimes the simplest solution is to remove complexity. The best hose routing systems are often remarkably simple. Less equipment usually means fewer failure points and fewer things demanding attention underwater.

Mistake #9: Failing to Test Changes in the Water

A routing change that looks perfect in the garage may perform poorly underwater. Always test changes in realistic diving conditions.

Evaluate:

  • head movement
  • regulator switching
  • SPG access
  • long hose deployment
  • stage handling
  • trim

Water testing reveals problems that surface evaluations often miss.

The Goal of Good Hose Routing

Good hose routing should allow you to:

  • access regulators naturally
  • monitor SPGs easily
  • deploy the long hose smoothly
  • swing sidemount cylinders in front of you easily
  • handle stages efficiently
  • maintain trim
  • reduce entanglement risks

Most importantly:

It should not require constant attention.

If you spend significant portions of a dive adjusting hoses, clipping equipment back into place, or managing clutter, the routing likely needs refinement.

Final Thoughts

Hose routing is one of those details that rarely receives attention when it’s done correctly. That’s because good routing becomes invisible. The system simply works.

Bad routing, on the other hand, shows up constantly:

  • dangling hoses
  • deployment issues
  • clutter
  • snag hazards
  • increased task loading

Before changing hose lengths, consider whether the real problem is the routing itself. In many cases, a small routing adjustment solves what appears to be a much larger equipment problem.

Hose setup is surprisingly involved and is covered in detail across two chapters in Sidemount Diving: The Almost Comprehensive Guide, including multiple configuration examples.

Readers of the article can receive $10 off the book Sidemount Diving or $5 off the book Recreational Sidemount Diving when purchasing directly from the website.

Use code HOSE10 for the Sidemount Diving Guide and HOSE5 for the Recreational Sidemount Diving Guide during checkout.

Related Articles

Sidemount Hose Lengths – Choosing the Right Setup
How to Pass Restrictions in Sidemount
Proper Sidemount Cylinder Rigging: What Matters Most
How to Properly Trim Out in Sidemount – Solving Common Issues

For a complete overview of how these elements work together, see The Complete Guide to Sidemount Diving Configuration.