Newty, I got out on the lake this sunday to do some surfing and one thing i found out, All the valves need to be the same size, i have one 1" and two 3/4" valve on it right now. What would happen is the 1" valve would open if i was using one of the smaller valves to fill a bag up. At this point i think im going to make a run the the home depot and get 2 more 1" valves.
Do you think the thru hull can handle haveing 2 800gph pumps? works out to 26.6 gpm. I remember you wrote somthing about gpm flow thru 3/4 pipeing but i cant find that now.