720 gph
http://www.wakemakers.com/johnson-ul...last-pump.html
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Thanks Joe. So for fastest fill times, looks like the Tsunami T1200 is still the way to go.
I installed the Johnson pumps this spring and it has worked well with my 1100lb sac's.
Here is the over the top writeup: http://customfalconballast.blogspot.com/
and another one (has a link in it about someone who tested Actual Flow Rates of aerator and impeller pumps):
http://centurionavalancheballastinstall.blogspot.com/
FYI, the mayfair aerator pumps really do need to be below the waterline to prime (scupper and moving forward is a good way to prime if mounted high). 1200gph is good, but Duffy who is a big surfer on WW, just put a manifold system and Rule 3800 aerator pumps in. He went with 1.5" throughulls. He's filling about 1800lbs in 4 minutes.
I had to register with on the CenturionCrew forum just to read the referenced post, which had some really good data. I posted the important part of it here: https://forum.moomba.com/showthread....104#post232104