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Swimming With Fins
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This week, I received a frequently asked question about swimming with fins.  Swimming with fins during rigorous military training like BUD/S, Coast Guard HRSS, Air Force PJ, Army Ranger / SF training or many law enforcement SWAT programs is required in open water tests.  Also see our Youtube Videos of swimming with fins

My philosophy with teaching swimming is “a picture is worth 1000 words, but a moving picture is worth 10,000 words”.  I have a link on YouTube.com of me swimming the Combat Swimmer Stroke with and without fins. (see link) The combat swimmer stroke is a very efficient stroke with and without fins and done by SEAL, PJ, and other special forces / special ops men and women.

For more info see the CSS link and read more about the technique of the combat swimmer stroke

The type of fins you should use when swimming in open water for any of these professions is a strong SCUBA type fin that can also substitute for SCUBA diving.  Getting your ankles used to the strain of the kick takes a few weeks of 500-1000m swims, but the initial pain will go away as long as you incorporate swimming with fins regularly into your program.   You will need to wear booties with these types of fins and not be able to use these fins bare foot.  If you can slip the fins on a bare foot - then they are flippers not fins.

Here is the email question from a young man preparing for BUD/S by swimming with a newly purchased pair of fins.

 Recently I bought a pair of Rocket fins and booties.  Up until now I have been using soft fins for your workouts and I have been able to fin 1 mile under 30 minutes with soft fins.  With rocket fins, however, it feels much more awkward and painful.  It seems as if my arm-pulls get me more propulsion than the flutter kicks with rocket fins. 

1.  Is there a specific technique to finning with rocket fins?  Does the kick have to be a certain width?  It seems that bigger kicks give me a stop/start movement and interrupt my momentum but while smaller kicks give me constant movement they still don't seem to propel me that fast.

There is a technique to swimming with fins, but no one best way as we all have different kick strengths.  I have found that athletes in sports like football and soccer may not be the best swimmers without fins, but when they place a pair of SCUBA fins on their legs, they are faster than most people in the class.  This is because they have well developed leg and hip strength and can use bigger kicks to build speed.  Some athletes with less strong legs / hips tend to still swim fast, but are required to kick using smaller strides at a faster pace.  You have to find out what works best for you personally.  You will want to learn how to swim on both sides as well because you can alter your kick as long as your top leg always extends forward on both the left and right side.  Learning to swim on both sides offers a form of “rest” by changing the pull – push stride of your left / right leg.

 As far as arm pulls and breathing as pictured in the video, the arm pull can be used as another method of propulsion, especially if you need to rest your legs by skipping a few kicks throughout a long distance swim.  Many people like to do a slight pause of kicking when breathing and recovering the arms forward again to remain streamlined.  As with any swimming, recovering your arms should remain stream-lined and not an obstacle to forward motion.  See Video to help:

 

 

2.  The fins seem to cause pain in my feet after a couple hundred yards and stiffness up the front and side muscles of my shins.  Is this just a matter of conditioning and getting my feet used to wearing these fins?

It is a matter of conditioning.  When first wearing fins while swimming, you should only swim a few hundreds yards and push slightly past discomfort in the ankle and shin area.  Do not push too hard and for too long at first as over use injuries like tendonitis in the feet and knees can flare up causing you to only be able to swim or run with severe discomfort or injury.  This process usually takes about 10-15 swims or two to three weeks of swimming with fins.  It is recommended to swim 500m with fins and if they start to bother you, take off the fins and swim 500m without, then try fins one more time until discomfort returns.  Do this for a few weeks and you will be able to add greater distances each time you swim. 

3.  Is there a particular SCUBA fin you recommend prior to training for BUD/S? 

Actually, as long as you have a SCUBA diving fins that requires you do wear booties (versus slip on bare feet flippers) then you are good to go.  I used my old SCUBA fins prior to BUDS and they transitioned nicely when issued Rocket Fins and UDT Duck Feet.  SO you can use what you have or get the Rocket Fins if you wish.  I personally like the CRESSI Frog Fin and it is what I swim with today.

 

Good luck with adding fins to your swim workouts.  It takes time to get comfortable so do not feel weak if you can only swim a few hundreds yards the first time you wear a “real” pair of fins.  Feel free to email me if you have any questions at stew@stewsmith.com.


Stew Smith is a former Navy SEAL and fitness author certified as a Strength and Conditioning Specialist (CSCS) with the National Strength and Conditioning Association. If you are interested in starting a workout program to create a healthy lifestyle - check out the StewSmith.com Fitness eBook store and the Stew Smith article archive at StewSmith.com. To contact Stew with your comments and questions, e-mail him at stew@stewsmith.com.

 

BOOKS / eBOOKS / DVDs

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Published Books / DVDs

Complete Guide to Navy SEAL Fitness (Book / DVD)
Maximum Fitness

The Special Operations Workout

The SWAT Workout - From Recruit to SWAT Team Member
The Combat Swimmer Stroke DVD

The Pre-Habit Workout DVD
Clinic DVD for Navy SEAL PST
The FBI Special Agent Test Clinic DVD

The Complete List of Stew Smith's eBooks:

Fitness for All Levels of Fitness

The 90 Day Beginner Guide to Fitness
The Advanced Maintenance and Recovery Program

Reclaim Your Life - The Erin O'Neill Program

Veteran's Fitness - Baby Boomer and a Flat Stomach

The Busy Executive Workout Routine
The Advanced Weights / PT Workout (Fall / Winter Weight Gain Cycle)
The Perfect Pushup Workout

The TRX Workout
NEW - Circuit Training 101 ebook
NEW Obstacle Course Race Ebook

 

The Special Forces Physical Fitness Workouts
 Combat Conditioning Workout

Navy SEAL Workout Phase 1  Beginner Weeks 1-9
Navy SEAL Workout Phase 2 - 3 - Intermediate Weeks 1-12
Navy SEAL Workout Phase 4  Grinder PT -  Four weeks before Hell Week

Navy SWCC Workout

The Army Special Forces / Ranger Workout 

The Army Air Assault School Workout

The Army Airborne Workout

USMC RECON Workout
Air Force PJ / CCT Workout

The Coast Guard Rescue Swimmer Workout

The OCS, ROTC, Service Academy, & Bootcamp Workouts

Navy, Air Force, and Coast Guard OCS Workout
The USMC IST and PFT Workout
USMC OCS / TBS Workout
The Service Academy Workout (West Point, Navy, Air Force Academy)
The Navy, Air Force, Marine Corp Bootcamp Workout

The Army OCS and PFT Workout
The NEW Army PRT and Combat Readiness Test Workout
The PFT Bible - Military / Police Standard PFT

 

The Law Enforcement Physical Fitness Test Workouts

The FBI Academy / PFT Prep Workout

The DEA Prep Workout

The FLETC Prep Workout - Ace the PEB

The State / Local Police Academy Workout

The Fire Fighter Workout

Why a 52 Week Workout Cycle?


    
  Seal Multi Men's Multi-Vitamin Multi-Mineral

Become a TRX Trainer   

 TRX Train Like the Pros


 


Some Titles Above available in Print Softcover Format

 

 

Navy SEAL APP
 

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