TBay: As Dave says one of the most important things to do is get a maximum depth measurement. If you have absolutely no fish including minnows in the pond then I strongly suspect the pond experiences winter kills on a regular basis. If you are not there in winter then snow removal is not a very good option to prevent a winter kill for your sitation. An aeration windmill may be a second option. Windmills left to their own operation with no periodic mechanical checking during heavy winter can be problematic.
I suggest you go out and buy a wire mesh minnow trap. A local bait dealer will tell you where they sell traps, maybe WalMart or Meijers. If it is shiney wire mesh spray paint the trap the color of your pond bottom, brown-green. Bait trap with bread and set in along shore of your pond. Trap will catch some minnows or small game fish if they are present. If you stock the pond with fish, the trap will always be a useful tool in the future to collect and monitor fish populations.
Based on your region and if you can prevent winterkills, I would first stock with yellow perch-minnows and then smallmouth bass. Yellow perch will be a better adapted panfish in your region. Perch - when balanced - will grow faster, get bigger and be easier to catch for that youngster the your photo than bluegills. will If you do not like that combination you can always introduce bluegills.