Here are the rules for fair chase: Check out rule no. 3. IMO, trail cams violate it.
FAIR CHASE
, as defined by the Boone and Crockett Club, is the ethical,
sportsmanlike, and lawful pursuit and taking of any free-ranging wild game animal in
a manner that does not give the hunter an improper or unfair advantage over such
game animals.
Use of any of the following methods in the taking of game shall be deemed
UNFAIR
CHASE
and unsportsmanlike:
1. Spotting or herding same from the air, followed by landing in its vicinity for the
purpose of pursuit and shooting;
2. Herding, pursuing, or shooting game from any motorboat or motor vehicle;
3. Use of electronic devices for attracting, locating, or observing game, or for
guiding the hunter to such game;
4. Hunting game confined by artificial barriers, including escape-proof fenced
enclosures, or hunting game transplanted solely for the purpose of commercial
shooting;
5. Taking of game in a manner not in full compliance with the game laws or
regulations of the federal government or of any state, province, territory, or tribal
council on reservations or tribal lands;
6. Or as may otherwise be deemed unfair or unsportsmanlike by the Executive
Committee of the Boone & Crockett Club.