1 more point of clarification and I hope this doesn't confuse but to answer your original question it does depend on whether you are hunting in a "true spike" unit or just a "spike" unit. In true spike units, neither antler can branch at all, in spike units however it just has to have 1 antler that doesn't branch. I saw a 1x6 years ago but passed because I was worried that I may have misidentified it, however he would've been a legal bull