bilge pump question

[spareparts]

those sensing pumps suck, the johnson pumps are pretty good, their float switches suck. I like having a separate outlet for each pump, that way I can tell if they work, My emergency pump outlet is mounted directly over the main pump outlet, if I look back and see two streams of water coming out at the same time, I know I've got something going on in the bilge(alarms fail). I've seen bilge hoses break(especially that white corrugated hose), if one hose breaks, you will have both pumps pumping back into the bilge