Originally Posted by
jstenger
I would probably "Y" into the starboard bag. Since this forth pump is for the bag under your portside seat, chances are that you would not be filling the starboard bag at the same time.
I know that you already have a forth pump on hand, but I believe you didn't know where to mount the switch. You could skip the pump all together and add a wye valve to your starboard bag. No need to add the pump or wiring. Fill the seat bag when surfing, or fill the starboard bag when wakeboarding.
Don't know if you already did it, but you could vent the seat bag into the portside bag. Once the seat bag is full, it would help fill the 1100 that you have. This would cut down on fill time.