erdnarob

Very interesting. But a lot of DZ managers don't have 10% of that sense of marketing shown here. The described psychological state of somebody who just finished a tandem jump is exact. Time to brief the tandem master into marketing.

Great work. However there is no clear explanation where the hyperbolic functions come from. Could you make it more explicit please.

I have jumped with Roger. I met him in 1985 at Freeport Illinois at the Freak Brothers Convention. Nice personality, ready to help, and fantastic organizer. Roger has signed my Freak Brothers card #2115