The first two things I would look at is the current weather pattern, pre frontal, post front, stable, whatever.
The second would be the current water color in the pond (assuming we're talking about a pond if no maps are available).
If you know those 2 things you can make a decent guess about whether they should be shallow or deep, active or inactive, etc. and pick your baits accordingly - at least for a good starting point.
For example - If there was stable weather and stained water color, I would expect to be able to find some active fish reasonably shallow, I would tie on something like a spinnerbait, squarebill, have a flipping rod handy, shaky head, basically be ready to work the 1-10' zone. From there, just start trying to run that pattern on whatever variety of structure or cover you can find in the pond until you either get some bites or feel like it's time to move on to plan B. Good Luck!!