There is no legal reason to post, trapping for 55 years and never posted. Yes sometimes you catch hunting dogs or roaming dogs. Owners are never happy. Very good chance your trap will be taken or destroyed. By choice I choose traps like MB450 that won't hurt any animal if released within a reasonable time, this year I've released a house cat and a gray fox. Once had a hunter trying to pry his young beagle out of my trap with a stick. I reached down a released it and the dog continued on the rabbit trail. Hunter thought I should put signs around the area the trap was in, tried to explain to him about thieves.
Stand up and be counted, join an outdoor sports organization
Life NRA,Life PTA,Annual SCI