For years I've looked for an effect that would make my fretless sound more mwaa! Right now I use a chorus set to it's slowest sweep, it's ok. Perhaps a gate but I don't want it to sound breathy. Personally I like for the note and slide to come out without so much attack. I know your saying a vol. pedal and yeah maybe. Another sound on fretless is the classic stand up sound. Is it more mid-range? I suppose tape wound strings helps for that. I just bought a second fretless I was thinking of selling my other one but maybe I should keep it and put tape wounds on it for stand up sound? Just trying to get ideas.