If you are looking for a high-yield stock, utilities Dominion Energy and Black Hills have you covered. But which yield is better?There is way more to consider about a dividend stock than just its dividend yield. That is on clear display when you compare Black Hills Corporation (BKH -1.29%) and Dominion Energy (D -0.83%). In the end, the yield is going to be less important here than the future prospects for the dividend and company history when you make a final call. Here's what you need to know and why the ...