As if there isn't enough to read to understand stock issues...
Here are the stock use approaches in other National Parks. A number of them seem to limit the stock impacts by disallowing free herding and by requiring the use of feed to replace grazing. After that are some of the documents referenced in the comment documents.
**** Stock Use Rules in a Number of National Parks
Glacier NP
http://www.nps.gov/glac/planyourvisit/privatestockuse.htmPoint Reyes NS
http://www.nps.gov/pore/planyourvisit/horse.htmRocky Mountain NP
http://www.nps.gov/romo/planyourvisit/stock_site.htmSEKI
http://www.nps.gov/seki/planyourvisit/stockuse.htmYellowstone NP
http://www.nps.gov/yell/planyourvisit/upload/YELL392_horsepacking.pdfYosemire
http://www.nps.gov/yose/planyourvisit/stock.htm****
Documents referenced directly or indirectly in the Preliminary Draft Alternatives Public Review Materials
****
**** 1986 Stock Plan
1986 SEKI Stock Use and Meadow Management Plan
1986StockUsePlan.pdf**** SEKI 2011 Stock Usage Report
SEKI_2011StockUseReport_Frenzel_20120209-2.pdf
http://www.nps.gov/seki/planyourvisit/upload/SEKI_2011StockUseReport_Frenzel_20120209-2.pdf**** SEKI 2012 Regulations
2012-Kings-Stock-Use-Grazing-Restrictions-2.pdf
http://www.nps.gov/seki/planyourvisit/upload/2012-Kings-Stock-Use-Grazing-Restrictions-2.pdf2012-Sequoia-Stock-Use-Grazing-Restrictions-2.pdf
http://www.nps.gov/seki/planyourvisit/upload/2012-Sequoia-Stock-Use-Grazing-Restrictions-2.pdf2012-Stock-Users-Guide-FINAL-2.pdf
http://www.nps.gov/seki/planyourvisit/upload/2012-Stock-Users-Guide-FINAL-2.pdfDale B. Dalrymple
