All answers to your questions are in the F&J guide at:
http://www.mini-iac.com/pages/rules/...dgingGuide.pdf
In short, for the hamerhead exit and entry altitude don't need to be the same.
Only the radious of the entry and exit part(1/4) loop needs to be the same.
On the humpty, altitude doesn't have to be the same either.
But the half roll needs to be centered on the downline.
I beleive if you read the F&JG a couple of times and then a few more after that
you'be able to recognize what the aresti means better. That was the way I learned
and still learning.
Rob,
How is the extra coming?
Take care,
Stratos.-