Well having made 1 or 2 blue fish popper in my time.... I'd say even weight on the bottom 1/3 and 2/3 with center hook. or use very hard wood like I do and avoid the weight. for the cup I round off a 7/8 spade bit on a grinder and use that on high speed on the drill press. If you get a bit I'll grind it for you. It's a standing offer with anyone out there just send me an email and you can come by I'll grind and test it for you.
armandt@atlanticoffshorelures.com
Armand