ah, semantic difference. the 5lb pockets are part of the ACB 10 system and the 10lb pockets part of the now discontinued ACB 20 system. the recommendation now is 10lbs on front, weighted STA and a pair of trim weights which with a SS backplate should get you to up to around 34lbs of ballast not counting a negative steel tank. in the event that more is needed a small weight belt should easily make up difference.
