I doubt that the 1/8 oz on a 5/0 was the problem. I am of the opinion that jigs are not secure on fish that eat the entire jig head and all. The angle of penetration is very poor inside the mouth. I have dropped many good Snapper after screaming runs and the jig and SP come back in one piece
The weight of the lure is an issue on things like 65gm Raiders etc where they can build a lot of force up. Sliders certainly solve this problem
Cheers
Neil