I rarely catch the limits of bass you are seeking but I love fishing away from the bank. Then again it sounds like the creek arms of our lakes are bigger than your entire bodies of water so you have limited options/choices. Also we have reservoirs with steep drops that are easy to find. One tournament angler that I watch on YouTube fishes natural lakes up north and he stays offshore most of the time. He mentions rock spines and weed edges in every single video so I assume those are key areas on natural lakes. I would try to find the steepest drop you can offshore and work it thoroughly with a feel bait like a Carolina rig. My best days offshore are when I can find a random log on a steep drop off