Smithy, have the Rule type pump for the bait tank only, I use the bypass so that I can also run the deck wash, also the deck wash primes the bait pump as it is above the water line. Are you using a deck wash pump for your bait tank as well, with my setup I'm filling the tank while running and only use the rule pump if at anchor for any length of time. I will have to have closer look at your setup next time, I'm due to give myself a trip again. Hope you're getting into a few.