Easier said than done, especially if you've never fished the water before.
IMO to be versatile requires one to strive to fish different waters and at the same time use lures and presentations, new or basic, that allow one to confirm their usefulness and versatility. Fishing with someone who knows a new water and uses lures you are not familiar with or in ways you thought would never work, saves a lot of time and frustration by expanding one's choices through experienc. That 's not to say I should once again become a lure junkie, buying every new model that hits the market, but that to know the versatility and limitations of a small group of basic lures (jigs, soft plastics, plugs, spinnerbaits, topwater), makes one a specialist that is versatile using each arbitrarily in high potential situations.
For example, take the lowly plastic worm. C-rig, drop shot, split shot, surface jerk, shaky head jig, as a trailer and of course, the Texas rig make this lure one of the most versatile at different depths, in different cover, on different structures types, used at different speeds, successful in three seasons and in rivers or lakes. How many of you can say you really know when and how to use the plastic worm the ways mentioned? If so, you are a lure specialist, versatile in its use but only if you've had proven successes more than a few times. Flukes don't count.
This goes for every basic lure category ----knowing when each has the greatest potential for catching bass, but only if you know the water and structure you can use them on and when to interchange lures and presentations as the need arises thereby fine tuning your approach. (For that to happen, sonar is essential !!!) Sure, a plastic worm works many places a jig will work, but a jig will work better at times because of a jig's unique characteristics - bulk, skirt flair, trailer. By realizing and capitalizing on those differences, you are more versatile but also more selective because depth and cover types are less daunting and you appeal to a bass's senses in a different way.
Besides knowing the bottom or structure like the back of your hand, timing is everything.
You can have the best set of lures in the boat, but knowing even the time of day they might produce better adds to one's versatility. A specialist won't catch bass using lures fish won't bite (maybe because of sun angle, hourly water temp change, sky brightness, etc) or aren't even around to bite because they went deeper or deeper into thick cover. Active fish aren't active every hour of the day and respond to all lure types.
I don't have the experience of many of you, but I have caught fish on all lure types and presentations at one time or other. That doesn't make me specialized or versatile, just experienced and at times just plain lucky.