I am curious about connecting the discharge from one pump to the suction of another. I know this, friends jetboat used a large impeller of course but also uses a smaller impeller that came from a jet ski to charge the main impeller. He bought the kit to do this and claims a large increase on speed as well as launch. I am not sure though what the outcome would be with the mag pumps. Be worth trying just for grins but seems to be wasted energy and excessive heat in the long run but also pumps arent cheap and sometime have to do odd things to get by.