Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
You could bolt on a Hollis or equivalent weight plate. SMS 75/100 Weight Plate
Alternatively a few kilos on the shoulders depending on where you need it.
How much weight do you need on the rig?