A horse or cow stepping into one can break a leg. Because they are pests, getting permission to hunt them is usually not difficult. Possibly, but it is not a guarantee. Farmers and other landowners are leaning toward hunting leases or hunting permits as a means of increasing their farm income, which even in the best years is not enormous. Trapping woodchucks is not easy as the animals can pull out of all but the strongest leghold traps.
Shooting is a better choice, something busy farmers have neither the desire nor the time to do it.
Nor do most of them own the expensive rifles needed to be successful. Like most woodchuck hunters, however, I lean toward late afternoon. Typically, I venture forth after dinner and enjoy a couple of hours of hunting before dark. Those final hours of daylight are prime hunting time. Good 'chuck hunting is never far away except for those who live in the largest cities.