For me, the massge jets are the most pleasurable thing at spas and thermal bath. Usually, they are built into the pool walls on different heights, and are rather strong. Only those jets are strong enough to bring me to orgasm.

As they are monted on different heights, not all of them are useful for masturbation, but most of them. Only the lowest of them are inaccessible (unless you want to dive down). But all jets above knee height can be used. The following image shows the four main ways of using them:

The lower jets, at about knee height and higher, can be best used for the "frontal down" and "from behind" mode, while the higher ones are more useful for the "frontal up" and "sideways" modes.

• Frontal down mode: this is my favourite, the one that most often results in an orgasm. It also works well with water inlet jets that are built into stairs which you find in certain pools.
  It is special inasmuch as it feels best with less than a full erection, or even completely flaccid - at least for me. It might feel different for other guys.
  And this mode is the most versatile in terms of body posture. You can keep your legs straight, or bend your knees, hold them tightly together or spread them widely etc., as is demonstrated in the video.
  The fact that your are facing the pool wall, however, can make it somewhat obvious to the attentive onlooker...
• Frontal up mode: A very exciting way, in my opinion. It works well with a full erection, as well with any other erective state. I like that I can bend back in my whole body. I have not come often in this position, but it is definitely possible, as shown in the video.
  Again, it might be somewhat obvious, also from people passing by outside the pool, so be watchful!
• Sideways mode: This mode is very good for letting your penis be massaged in a rather unobtrusive way. For onlookers, it looks as if you were just having your hip or thigh muscles massaged from the side, while you actually stick your cock into the water jet.
  An interesting variant is rising up the bent leg that's further away from the jet, as you can see in the video. I have come this way several times.
• From behind mode: Also a good way for inconspicuous masturbation. You stand with your back towards a low jet, spread your legs, and have the jet massage your balls, cock, and maybe asshole from behind.
  An interesting postural variant is holding onto the handrail you often find mounted near the pool rim, and bringing the legs up backwards towards the pool wall. Difficult to describe, so watch the video for a demonstration.
  For maximum stimulation on your penis, you might want to push it down into the water jet with your hand, that's what I like to do, and how I usually cum.

How to use the massage jets for maximum pleasure. With a cumshot scene for all four "modes".
The video available for subscribers is 19'10"

 >> continue with Part 4: other pool features & techniques or Part 5: other pleasant spa features