Blackfish Help

[fishpro28]

I plan on going Sunday morning for blackfish, but I need some help. I have caught many blackfish before but 95% of them were from jetty fishing. Every time I go on a boat I catch small or no blackfish at all So I am going to try doing the shock leader thing. I have my reels spooled up with 65lb PP and was going to tie a 50lb mono shock leader to that with a uni knot... How long of a leader do I need? I was thinking 10-20 foot leader? Then there is the hook and sinker. I know KISS......but for togging does that meen a dropper loop and 8" tag to tie the hook to and no swivels? Any help would be great I don't want to catch a skunk on Sunday.