I wonder if people with blindsight could learn to perceive some of the things in their scotomas. Perhaps if they try to imagine "grabbing the object in their scotoma", they can feel a sense of feasibility that correlates with there being a graspable object there, without needing to actually grab it. They could learn to constantly poll their mind for this graspability hunch and other hunches, and integrate it into a limited awareness of what their eye is seeing. This would be more useful for people with total blindsight.