What got me into trophy size bass fishing was fishing gin clear rock quarry ponds near where I lived and the introduction of Florida strain LMB in San Diego city lakes. I lived 150 miles north of San Diego, so fishing those lakes required long round trip drives.
The rock quarry lakes had northern LMB up to about 12 lbs and as a young teen spent a lot of time watching and learning the habits of the larger adults, caught and released most of them, largest was 12 1/4 lbs. The primary prey fish source was suckers, chubs, bluegill, along with frogs, crawdads, small birds and mice or rats.
The first SD lake I fished was Lower Otay as a young adult. I had learned a lot about big bass habits and caught 3 DD NLMB by the time I started to target FLMB. Knowing how to nose hook crawdads and fly line bait fish, it didn't take long to start catching the big FLMB on live bait, lures was another story and that took a few years to develop lures these big FLMB would strike. The hard baits had to be hand painted to be more realistic, soft plastic worms also needed to have mote night crawlers realistic colors like cinnamon brown with black or purple/ blue blood line. This is when I started using custom hair jigs with custom pork trailers that have become my go to giant bass lure. Swimbaits came later in the late 70's, early 80's.
Knowing that live bait is very effective and could have a major impact on big bass populations in our small SoCal lakes, I became a advocate to stop the use of live bait the first 1/3rd of the year; Jan-Apl. Never got very far with my anti live bait proposals and watched our big bass population crash, some recover and others haven't, the pressure of live bait fishing doesn't help the giant bass populations, but I have learned to live with it.
Catching big bass consistently takes a lot of dedication to learning about these fish and their habits. For me it's been a life time of experience.
Tom