Custom shower hose (particularly for Kohler products)

[jlcDesign]

Ladies & Gentlemen, there doesn't appear to be any decent hoses in the Kohler catalog unless you count either the one that comes with the slide bar or the one that's made to connect way up high.  I'm doing a kind-of foot (or dog) washing station, and I want to either create or otherwise acquire a hose.  I've tried with doing a molding polyline in elevation view, but the problem is that it has to curve both left/right and front/back.  See attached.  Love to hear some insight!