I use the freebass too, and an Boss OS-2 - I think it is more sublte than the distortion, but you can get some pretty full on distortion effects. One problem it it loses a tiny bit of the bass when it's distoreted, and the pedal can't quite cope with high resonance on the freebass - you loose the volume big time.

I whack up the gain on the mixer too, and also send that out and back via a Zoom 1201 with a combination chourus (kept pretty light) and delay.

I think experimentations the key though - I mess about wityh it quite a lot with everything imaginable when I'm writing/producing stuff, but the above seems to give me a pretty good all round set of effects for playing live.

http://homepage.ntlworld.com/acidsat...pills_live.mp3 Is an example of this in action, but it's a pretty tame one...