Hey, I am there with you. I have to fish from the banks all year around and I live in GA where air temps get into the low teens at times. I am different from you because I do NOT dropshot and I know it's a good technique but I just don't use it hardly at all.
My most productive lures are topwater in the morning and evening in the Summer, spinnerbaits, crankbaits, and shakey heads. The best advice I would give you is to do your research on your body of water from local guides. Go to fishin.com where you click on Fishing Reports at the top of the page, find your state, then your body of water. This is professional advice and It tells you about water temps, productive lures for each species, etc.
Dropshots WILL get hung up around rocks and things especially if you do not use "drop shot weights" that pull off the line when snagged. Ive tried split shot and tie on weights for dropshot rigs when I do use the rig which is hardly ever and they do get caught.
I am sorry you lost that fish but know that even pros lose big bass at times. I would say to use jigs, weedless worms, spinnerbaits, topwaters, and crankbaits especially around rocks and rip rap. The crankbait will hit those rocks and don't just cast out and reel it in. Cast the crankbait out and as you reel in, twitch the rod and you will feel a vibration which is the crankbait emitting an erratic movement that really attracts bass. Let your crankbait hit the rocks and bounce off too because that will entice bass to bite as well. Also, sometimes you can let your crankbait hit the rocks and then stop the retrieve then start it back....this will also entice the bass to bite because it thinks its an easy injured meal since it hit that rock.
I hope this helps and I feel you about those pesky bushes and small trees. Ive felt like taking my machete and cutting them down at times then throwing them into the water to attract bass to the brush if I knew the cops wouldn't get me.