Help with my trim, please

[Asanoth]

Hello,
I would like to ask the more experienced here for some advice on my trim, how to improve and fix it. I know people generally have their body more leaning, not straight, and bent knees. I do not do that, but that is more of a natural thing, not that someone taught me.
Going a bit down:

Going straight.

Photographing something more or less in front perpendicular to current:

Bottom view:

Relaxed followed by stroke. The video of the stroke is here:
Edit: It actually can read google drive videos! So no more pictures, one more video:


Thank you all for any remarks .

 

[crofrog]

Overall it looks ok. If it’s comfortable I’d not worry about it.Your propulsion is what I noticed. Which is why I recommend the fins for the frog kick focus on touching the bottoms of your feet together at the end of the kick and allowing more of a glide phase.

I think you’d appreciate some heavier and stiffer fins. They’d help your propulsion and add some weight lower on your body which would counteract some of the head down trim you have probably just enough to be able to have some bends in your knees which I also think would help your propulsion.

 

[Norwegian Cave Diver]

Your core seems to be in trim, just the legs are too high. Begin with the frog kick position, keep your body straight from your shoulder to your knees. Tighten your butt muscles to keep that postion. That will help bring your center of gravity closer together. Then experiment with a heavier fin. Perhaps a buddy or your dive shop has a pair for you to borrow and get new video. Watch some cave diving videos to see the frog kick position. Learning to frog kick will change you as a diver. It will give you a kick and forward motion with a 50% effort and a glide for the rest of the forward movement (and therefore resting during the glide phase) (instead of scissor kicking that requires a 100% effort - always kicking to move). Then you can learn helicopter turns (turning within your body length) and learn to back up.
Off topic but your SPG is hanging down. Go to your LDS and ask for a new hose and single pressure gauge, bolt snap and a bit of cave line. This will give you the ability to clip your pressure gauge off to your left chest D ring. You will never need to look for your pressure gauge again and you will look even more in trim (no gear hanging down). Enjoy the diving

 

[Norwegian Cave Diver]

One more thing...
You see new divers trying to change their position in the water using their hands to move themselves left or right. It's the right idea, just the wrong tool. Your fins are the right tool for that job, and frog kicking is the answer.
Buoyancy - Trim - Propulsion. The holy trinity of scuba diving.

 

[Eric Sedletzky]

Tuck away your console better.

 

[h2o_hamilton]

Is your lower back getting sore? Overall trim looks good. I agree with Crofrog in regards to both the glide phase needing to last longer and switching to a stiffer single blade fin.

 

[Asanoth]

Thank you all for answers. I should mention that I am a vacation diver from a landlocked country, so all my gear is rental, except for the camera and the mask .
Nothing is getting sore, but my air consumption is fairly high - not by numbers, but on my last trip to Egypt, I got to 50 bar at 15 l at the more or less same rate as most others at 12 l. For my 15th - ~50th dive, my SAC was 17,3 l/min (not sure about the exact tank size, I simply put the 12 l into Subsurface), and it was the same during my Egypt trip (dives 51 - 72). Interestingly enough, on my first 10-15 dives after my certification in the Phillipines, it was only 16,5 l/min. Then I got some Thailand dives at over 20 l/min (just a few, most are again somewhat 17), and a Komodo trip at 17,4 l/min - which seems my consumption is actually getting a little bit worse. But I think that is within margin of error given I just put 12 liters (and not 11,3 l or something like that) everywhere except for those 15 l in Egypt. My wife has like 9 l/min