Man, here I am agreeing with you again.
First thing to examine is why you have a noise problem. If the noise problem is truly unavoidable (like single-coil pickups into a high-gain overdrive) then you'd read the Hush manual.

Specifically look to see if it says it runs at line level or instrument level. If line level, then it goes in the fx loop- but only if it's a "series" loop and not a "parallel" or "50/50" loop. The amp manual will tell you. If instrument level, then it goes between the bass and the amp. If it runs at line level and your amp's fx loop is parallel, then it's not worth the trouble of connecting it at all.