Hello. New to the group and offshore fishing. Been at it for about 2 months and learned much. Been spending most of my time at MR, 9 mile and other reefs in the area. Have done fairly well for a newbie and want to get out further. Ledge??? Maybe. MR is around 70 feet deep. How much farther would I have to go to get more, bigger and better action? 100-150ft range? Once there, do I drift or spot lock on the trolling motor? Slow trolling is always an option for Kings. Are there fish symbols on a chart plotter for those depths. Any advice would be helpful. Thanks.