Congrats,
SO it sounds like you took extra steps and 'pounded' your feet harder?
If I take extra steps, beyond 1 step, I can't jump as high. I just gotta work on it, but I jump highest off of a one step, maybe a skip then one step.
Raptor:
I've seen you talk about your approach in the past and how you think there was more speed. But from the looks of it your legs move fast, but you don't cover much ground at all in each stride, therefore it's not really that fast. THere's a lot more to it, if you look at Kadour, he moves is legs fast but achieves considerable extension in each stride which you do not so that's not true speed I suppose, maybe ground contact time is less but approach velocity can'tbe too fast:
D4: It depends on the GRFs. In triple jumping GRFs can reach 22 tmes BW. 10 lbs times 22 = 220 extra pounds, or 100 kg. Ouch. In SVJ it's like 5 (?no too sure), so 10 extra pounds wouldn't make much of a dif if it contributed.
Then there's bone density, getting bigger I think could help provide a bigger stimulus for bone growth during one leg jump practice or bounding drills. Bone density can reach a limit thogh I think, trabecular density can at least bu tother adaptations will occur. I'm about your size, 155 right now, what I notice is that it's how my CNS is activated that tells me how big or fast I am.
If I lift slowly, I feel slow. If I lift fast, even with upperbdy, I feel lighter and faster and my upperbody doesn't feel like it's weighing anyhting down.