Our Boer goat buck, Cassanova, is only 10 months old. Although he's more than willing to live up to his name sake and gives a valiant try, he's still too short to reach the taller does. So I built this platform that he stands on and she backs into the cutout. Works like a charm! Can't leave the doe in his pen though as she doesn't get into position on her own, silly girl, and it only frustrates him to keep trying and not accomplish anything. So I bring her in for conjugal visits, back her into position, and voila! mission accomplished. Ingenious if I do say so myself.