I have a "what I did" about making rapids and rushing water at:
http://www.pacificcoastairlinerr.com/rushing_water/ (http://www.pacificcoastairlinerr.com/rushing_water/)
(http://www.pacificcoastairlinerr.com/photos/rapids.jpg)
Thank you if you visit
Harold
Dear Harold,
As always, outstanding work!
Thanks!
the Bach-man