Free: Contests & Raffles.
http://tyolsonconstruction.com/You'll almost have to contact this guy for access permission, his family own the majority of land from customs road half way up the mountain which is where I usually see or have seen sheep. Gaining access from them without a large chunk of money though is highly unlikely. Good Luck. Too bad you didn't get drawn 25 years ago when there were sheep everywhere and the land wasn't posted!