So I've finally had enough of the original sprinkler valve/aerator pump setup in our 2005 24SSV. I bought the big Talula HF 30GPM reversible pumps for the coming season. Now it's time to install. Here was my basic plan:

1) Three 1-1/2" thru hull fittings with 90 degree brass elbows to ball valves.
2) Screw the 3 pumps directly to the ball valves and let the thru hull support the pump.

Very elegant and simple compared to the original plumbing. BUT, after holding and studying these huge pumps, I started second guessing myself. Are the thru-hull and ball valves going to be strong enough to support the pumps? The alternative would be to remote mount the pumps and run flex hose to them from the ball valves. This is problematic in that the 1-1/2" hose is not very flexible and it adds several additional fittings, also doubling the number and length of hose required.

Has anyone mounted pumps directly to the thru hulls and have a long term assessment?