Some tricks: if you have a trigger source with MIDI sync (MIDI to CV/trigger converter, drum machine with trigger output) you can fire the EG and control the VCA and VCF of the external signal. I have an E-Mu SP12 with metronome individual output that can perfectly trigger the EG in several time signatures synced with MIDI tempo (1/4, 1/4t, 1/8, 1/8t, 1/16, 1/16t, 1/32, 1/32t). Then you can control the amplitude decay of every "slice" of incomming signal with the slider of the EG, as well as the decay of the cutoff frequency of the LPF affected by the EG. I use it with samples of the same SP12 and it adds a lot of character to the final sound.

Because this is a single oscillator machine, theres some things you can do to fat the sound: get a chorus pedal, this is the equivalet of have 2 oscillators slightly detuned.

get a Boss OC2 Octave pedal, that generates 2 square waves 1 and 2 octaves below the original sound and with individual volumen control of the 3 signals. This is the equivalent of Roland's square wave sub-oscillator (plus an addicional bottom octave) and can transform the S60's week sound in a REAL PHAT monster.