Saw your questions in your post and thought I’d toss out a few ideas. First, I’d lighten up on the leaders. I typically use 6lb Berkley XL or Vanish Flourcarbon. At times I have dropped to 4lb if the bite is tough. In either case, check your leader after each fish and consider retying if the leader is frayed. Since there aren’t any obstructions to speak of out on the flats and nowhere for the fish to go to wrap you up in weeds this lighter option should be all you’ll need, and you may see the number of bites you gets goes up.
As far a leader length goes I know a lot of people run the long ones, but as you’ve seen they have a downside. I learned a while back from a truly talented Mille Lacs backtroller that you don’t always need the long leader, especially when the wind is blowing, or if you need more control to keep the bait into the fish your sitting on. Since that leasson I rarely use a leader over 5-6 feet, and this year I’ve been catching more fish than the boats around me.
Hope this improves your results.