Octopus circles are the way to go for soaking bait. i use 8/0 Octopus circles for surf shark fishing, 9/10 times they set them selves on the initial run and 100% lip hooked.
No leader, a leader to me is the weakest link between you and the fish. I have had many leaders break in different places from each different vendor, I no longer use them. Its just hook, bead, sinker and line tied to an extra heavy musky rod and abu