Thanks for all of the great advice, everyone!
I do like tinkering and those could be some interesting projects.
P.S. If our basement is full of fish raceways next winter, and my wife takes umbrage, then I can blame you guys right?
Guys?
Guys?
Hey, where did everybody go?
Dig a room under your garage, or dig it before the garage is built, and put the raceways there. One member here did that.