These days the only hooks I use on dropper rigs are recurve (or circle) hooks. Recurves, probably more than most other hooks, need to be used correctly for them to be at their best. There are three points to remember:
Tie them so the trace enters from the gape side of the hook Hook the bait through only once, right on the end. It may look wrong but with its turned-in point, the hook will not perform well if the gape is full of bait Do not try to set the hook with a hard and fast strike. Give the fish time to get the bait in its mouth then set the hook by smoothly but firmly lifting the rod and winding the reel. Too fast and the hook is likely to fly out the fish’s mouth; too hesitant and the fish will drop the bait.
When using recurve hooks don’t be afraid to use a lot of lead in deep water, especially if using small baits. The fish will hook themselves in the corner of their mouth very effectively.