Almost didn't bother answering this Drew because you won't listen and will want to "experiment for yourself" anyway.
Regardless, some others may find this useful: Joint pain (particularly after exercise) is usually due to muscle imbalance. You are using muscles and putting strain on tendons not normally used previously or in other activities, the tightening of these muscles & tendons is putting stress on your joints in ways they are not used to and therefore creating pain. The best way to release this pain is regular stretching, massage and exercises that work the other muscles to keep your limbs in "balance". I do regular Pilates classes, get a deep tissue massage and do other sports like rock climbing, cycling, running and swimming to try balance my bodies activity and muscle use. Good diet helps too by the way.
NOTE: Above advice doesn't take joint disease like arthritis or gout into account by the way however my sister has had rheumatoid arthritis since her teens and lives a mostly pain free life through proper diet and exercise.

Hey mate,
Totally agree with the above advice.
Being of the grey variety
I often get ankle and knee soreness.
As plums says ,often too stiff a board and to wide a stance position will add to knee soreness.
Carbon boards seem to be a little stiffer in flex and give.
Cold compacts or hot with legs up, can relieve the pain.
Also a couple of coldies don't go astray.??

One more note of advice, I found a post here years ago someone put up with a series of yoga stretches. It's a ten to 15 minute routine. I incorporated that into my program and it has helped big time. I have had two knee surgeries (acl left, meniscus right) and tore the medial right that did not require surgery but does cause me pain if I over work it by going for runs over 6 k's and more than three times a week.
The yoga keeps me strong and supple and have had less injuries due to flexibility. I am in my mid 50's. I want to be able to keep charging into my 80's :)

dafish said..
One more note of advice, I found a post here years ago someone put up with a series of yoga stretches. It's a ten to 15 minute routine. I incorporated that into my program and it has helped big time. I have had two knee surgeries (acl left, meniscus right) and tore the medial right that did not require surgery but does cause me pain if I over work it by going for runs over 6 k's and more than three times a week.
The yoga keeps me strong and supple and have had less injuries due to flexibility. I am in my mid 50's. I want to be able to keep charging into my 80's :)

Hey buddy, can you post the exercises here? I hate stretching and although I do them am always looking for alternatives to the usual stretches I do.

My mates girlfriend is a physio and she said I'm probably getting knee pain because when I bend my knees it's not inline with my feet, so it's twisting the knee when I bend it (kind of hard to explain). She told me to keep my feet inline with my knee when I'm on my board.

There's a few kiteboarding specific warm up videos on You Tube and Vimeo if you go looking. I'm currently seeing a Sports Physio for some leg issue and they pretty much excluded arthritis right away based on hip and knee ranging in various postures. Basically as Gateman says a lot of knee and hip issues are down to imbalance and tightness. Flexibility work will only get you so far, what you need to do is strengthen the supporting structures. Go see a PT or Exercise Physiologist for guidance and don't rely on Dr Google - might cost you a few bucks; but my PT friends at work all say once you've got a program sorted, you aren't looking at heaps of sessions for treatment - like most things in life you have to put the work in yourself to heal yourself (and be smart about it).

55yo, ice knees after a big session, does wonders followed by a lot of SFA. Less rigid board helps enormously.

shi thouse said..

dafish said..
One more note of advice, I found a post here years ago someone put up with a series of yoga stretches. It's a ten to 15 minute routine. I incorporated that into my program and it has helped big time. I have had two knee surgeries (acl left, meniscus right) and tore the medial right that did not require surgery but does cause me pain if I over work it by going for runs over 6 k's and more than three times a week.
The yoga keeps me strong and supple and have had less injuries due to flexibility. I am in my mid 50's. I want to be able to keep charging into my 80's :)

Hey buddy, can you post the exercises here? I hate stretching and although I do them am always looking for alternatives to the usual stretches I do.

sorry, I tried searching but could not find it. It was from like 2012 or so. The routine covered quite a few muscles and in the summer months actually get a sweat up from doing them. If I ever do come across it I will post it to you.

bfg said..
one of these ?

Good post dude
I just stretched my underpants a few inches watching them

Buy a Tranq, problem solved.

Sh!t where's Lotowind

He'd be all over this if it was s windsurfer asking
Oh that's right, one trick pony past his use-by date.

I'm 57. My knees never hurt. Been snowboarding since 92, skateboarding since 1965, ( with break 1975-2007) Kiting since 2001.
Why?
Been riding bicycles since I was 7, and in my 20-45 years old, like 4000km a year. quads and knees are strong. These days I do 1000-2000 km year,
Please note that I gave zero genetic advantages, my parents and grand parents were couch potatoes.
Start cycling

Yes, cycling should be done on non kiting days. Otherwise your legs will get too tired.