Potty training: Free Stylin' Method

Is this all too complicated and more info than you wanted to hear? My friend once let her 2 year old run around naked outside, and waited for him to pee, when he started she would rush him over to a designated "pee tree" and have him pee on tree. Then she brought a potty chair outside and put it in front of the tree. Then slowly moved the chair foot-by-foot into the house and into the bathroom. However she lives in Hawaii and has the luxury of letting her son run around nakey all day. Hope this helps!