At 16:13 26 April 2012, Justin Craig wrote:
I am sure there is a point where the polar falls off a cliff, however I
doubt you would ever get enough water in!!


Must be best to carry as much as possible... even if its only
to dump on any following pilots.
Releasing 10 gallons of (preferably ice cold.) water in the middle of a
5m/s thermal is the easiest way to seed some rain and make it just a 1m/s
thermal !