1. Only twice all summer. Run dry saved me both times. Still want a red light somewhere on the dash by the gauges to indicate when on. Seems like an easy mod. Your switch location will be better then mine though.
2.Didn't smoke a nitride impeller yet.
3.Yes 90lbs./ minute

Current draw: I drained and filled with 3 puppies and the engine off 90% of the time. I have two batteries.

Daze: would you go rule 3800 or jabsco puppies if you were setting up a boat that's a few years or more old?