Personaly I think it depends alot on the area you are in. For instance where I live in southern WI, The 1 1/2 yr. old bucks tend to have forks or small basket racks. Very rarley do I see a spike. But where I hunt in north east Wi I see all kinds of spikes. I think it has alot to do with the nutrition they have. So in general I think it would be nearly impossible to tell the future size of the buck by his 1 1/2 yr. rack.