like the users above mentioned . separate your power sources . they are speaking from experience . the stock hobie bait tank uses a tsunami bilge pump that pumps 500 gallons per minute . they have two options on batteries . standard 6 vlt 8amp ,and heavy duty 10 amp . standard batter may last 6- 8 hours and the 10 amp will get through a whole session day and night .
.a 10 amp 12 vlt batter should power most 5 inch f/f all day . good luck .