I'm amazed so many of you have luck with the greens for lakers. Never caught anything on them. Always only have luck with something pink or purple. Pink mostly. Go figure.
Either one will work if you mount a block on outside of boat below the rail so that it is flush with the outside edge of rail. Blocking is needed so it cant twist down and loosen up on you. Don't have any advice for you about the bolt patterns.
I think they are called slinky wieghts for drift fishing. Haven't seen them in years. Not supposed to snag bottom as readily. Used by bottom bouncers usually.