Knowledge wanted, boys (and girls).
After my 15th jump (not a good one I might add), I most definitely need some help to achieve and maintain a good arch.
Background info: 15th jump (yesterday) @ 11K was a mess. Poorly executed exit (I'm doing this 3-points exit (left foot on the skid, right foot hanging, both hands grip)), legs spread a little too far (more of an X than a boxed position) and one knee more flexed than the other lead me to a spin. Also, I was a little more nervous than I should since the instructor kept signaling me to relax (which I obviously failed to do), which also lead me to "pendulum" a little bit (sorry, I don't know the skydiving lingo in english).
You can tell I'm a little frustrated because we (me and lead instructor) were supposed to do forward/backward movement training and none of it happened. However, I'm more concerned with the fact I wasn't able to achieve and maintain a good leg position. Video footage shows my arms/hands are well positioned.
In the briefing, he told me to relax a little more but I'm having trouble to figure out the balance between "relaxing" and "holding tight enough to counter the wind".
So, here are my questions:
1. Legs - what's a good training method to achieve a muscular memory to improve my box man (knees, distance)? Is there such a thing?
2. Once in the box and with a good arch, how can I hold it without over flexing muscles I'm not supposed to? I'm 5'8" / 150lbs and I've seen a 6' with no more than 140lbs doing it.. If his body mass is enough, mine sure is but he obviously is using his mass way more effectively than I'm using mine.