At trial, if a witness lies under oath --just once-- it's absolutely in order never again to trust anything that witness says.
I didn't say the mannequin's hair could only been seen in one frame, in context, I said the two of them (JK and Dolliana) being poised there was unique to that one frame that where we could seen the mannequin over Jake's right shoulder.
See that Jake's pony tail comes down to just the tops of his shoulders
... and note the colors and highlight's of Jakes hair in the sun!
but here:
we see flowing, non-water-straightened, undeniably red hair that comes down to the middle of his back, showing that what's in that picture cannot have been Jake's hair, PERIOD!
Regarding the bottom pic in your post #400
http://www.freerepublic.com/focus/news/3428362/posts?page=400#400
Sequence pix 1-7 here show that keys had not yet gotten his hair wet.
http://www.freerepublic.com/focus/news/3428362/posts?page=384#384
Also, the bottom pic in your post #400 shows water background in the triangle formed by Mr Key’s right shoulder, chin, and left forearm.
Also water behind the hair & back.
No mannikin is being carried next to him.

Jake's upper body is dry. His head is dry. His hair is dry. No drops of water anywhere on his upper body. That's because when Jake exited the plane he was holding the rope handle to the stairs and he swung himself around. Obviously after he swam to the wing his hair and entire shirt got wet.
Thanks for providing the proof.