Oh , so your bounds are awful compared to a 10:xx 100m sprinter and a 20 year old pro long jump athlete? Soooo depressing!
Jokes aside, they are not that bad. I am sure they would improve fast if you kept at them, no? That is what maria suggested too in her journal IIRC, practice makes perfect ( no shit ! ).
Well I've had some time off and won't be full bore for another month when I move to my new place. To test my performance without training I jumped in a meet and I'm not a 10.xx sprinter anymore! I ran 11.7 and 23.5 without training. The 100m was ran into a 7.6 m/s headwind however which was REALLY crazy. The officiating tent and wind guage blew over by the time we ran the 200m so I don't know what the wind was then but I'm sure it was still very strong.... Anyway, to end the journal hijack...
Sorry to be the bearer of bad news but I agree with you and disagree with vag, raptor, etc.... Your bounds are not acceptable because you are not getting the benefit from them. You would be better served just doing single leg jumps then bounding like that. It's a simple fix though:
1) Stay on the grass/turf. As you get powerful and efficient you will get hurt on that surface.
2) The most important point: You MUST LEAD WITH THE HIP. You are leading at the knee. I commend you for trying to emulate an elite triple jumper with the butt-kick hip hinge but what you end up doing is butt-kick without your hip swing...
It's hard since you don't have stills but look at your video "Uglier bounds 2 jun 2014". Try to pause at the top of your height at about 22 seconds or again at 23 when you are right to the left of yellow pole... What you notice is that your back knee is almost in contact with your front foot.
While I'm certainly not a jumper watch my video (
https://www.youtube.com/watch?v=Q0Rv4HycljE) and watch my peak height at 3 seconds or so and notice that before my foot comes down my knees are not close to each other. The goal is to swing from the hip here so the foot unfolds from the butt and then swings all the way through. Your knee is bent but your knee is not back; does that make sense? What you really need to see is how to properly swing that hip and that's it. That really is the recipe to all dynamic sprinting, bounding, jumping, etc. Our fastest guy in our training group runs 10.05, our next fastest runs 10.2. The faster one actually is worse at bounding but when still leads with the hip... Even if you just hang your leg behind you and swing through at the hip that would be an improvement. This is why I don't love knee bend dominant exercises like squats for athleticism because I feel it can take away the most important and powerful hinge.
--- Besides this I would take the advice of the others. Start with single reps. Then double reps. Then LLRR over and over. Also make sure that you can nail a standing transition bound. Baby steps and you will get it. Although form is important one thing you can do is measure your ability. Try to see how far you can land in 5 bounds. Get better for a few weeks. Then make form tweaks that will make you go even farther.