Perhaps read this before attempting it.

"Have Bladder"
http://www.dtic.mil/dtic/tr/fulltext/u2/a461327.pdf

An L23 Blanik dynamic soaring experiment over Rogers Dry Lake, Edwards AFB about 6 years ago.
One important factor. Unlike Matt's scenario, everywhere was landable.
A flight computer was programmed for the occasion using software developed for dynamic soaring. Current wind gradient was displayed in-cockpit. It was found that you must fly the maneuvers with great precision.

Over lunch, one of the participants casually observed:
"It doesn't scale up well."
Jim