Lots of options:
Heavier plate (you can get them up to 12 lbs)
DSS plate with plate weights (~13 lbs total - here)
Weighted STA
Pour yourself a channel weight
ACB pockets
Tank Weights
Heavier plate (you can get them up to 12 lbs)
DSS plate with plate weights (~13 lbs total - here)
Weighted STA
Pour yourself a channel weight
ACB pockets
Tank Weights