O another drone fisher. What kind of drone do you have?
I usually only use two dropper hooks and a breakout sinker or just a torpedo sinker if there's not much current. That seems to work best. I also successfully used a running rig with a whole pilchard at the end and a light ball sinker. I just slowly reeled it in to cover ground.
I use a surfcasting rod with a big reel that holds about 600 meters braid. I fly my baits out to about 300 - 400 meters and if I don't get bites, I reel them in a few meters at a time with long pauses. With the braided line I can feel bites on this distance and know when something happens. Makes it more exciting in my opinion.
I use a dji phantom 4. What do you use ? With a tld25 with about 650m of 40lb braid on a surf casting rod and fly out about 500M I also have a second surfcasting rod that I fly out about 200M our I use it just to cast from the beach something.