On the larger big-game hooks, especially the larger 14/0 to 15/0 circle hooks, I have noticed that there is a gap in the eye of the hook. Whether using a monofilament or steel leader, the loop of line created when crimping the hook on the leader can get caught in the gap, changing the orientation of the hook and reducing its effectiveness. To avoid this situation with my homemade leaders, I now solder the gap shut. I use an inexpensive soldering iron to melt a ball of solder onto the gap. The solder flows into the gap and closes it off, and my hooks work the way they were designed.
Greg Y. Lin, Friendswood, Texas