Since my band lost our guitarist, we've basically become a bass/drum/vocals band. My approach in this band has been completely opposite of the usual bass role. I've been playing through a high gain tube halfstack w/ lots of reverb and attacking chords almost like a guitarist

The result is a sound that kinda sounds like a strat guitar being followed by a p-bass.. Anyone else face the tricky roll of filling out an entire band's sound? There are a few (.. rough!) clips on metaljeff.com of the sorta stuff I'm talking about. Sounds rather full for bass and drums IMO and is actually a lot of fun to play.