I am still experimenting with strings for a traditional wash tub base (one where you pull the pole sideways, rather than fingering a rigid neck).

There are dozens of different opinions on the web regarding one's favorite strings. Unfortunately those postings do not always indicate which type of WTB -- rigid neck vs. pulled pole.

I have a new 32" diameter, 35-gallon, round tub. I tried a low-stretch nylon 1/8" string. It has a clear sound, but does not go very deep into the bass note region, nor is it very loud. I am about to try a low-stretch nylon 3/16" string for comparison.

A few decades ago, I had a smaller WTB with cotton clothes line that had a wonderful deep, loud, bass register.

David D.