PF is a farrier, horse and cattle broker, a dog trainer who raises his own pups. By necessity, he spends a lot of time in barns shoeing horses on his property and the property of others. To make a living, he would have to go out of town.
Many people have made the assumption PF did a lot of the daycare for K. That is a wrong assumption. SF, PF's mother, lives at the same location and she would have been the primary caregiver for when K was in their custody. I'm not saying PF didn't play with K or never give her a bottle, etc. What I want to convey is I believe PF's mother, SF, who helps him run the ranch, is the one who would be K's primary caretaker when KB didn't have her.
Let that sink in.