Thanks everyone for your help on this, after digging through a good few training webinars on YouTube, I came across the simplest answer - offset, specifically how the offset fans across fixtures. You can change this behaviour by holding setup and tapping effects. I set my shift click to be 'fan first' (Also experimented with the other fan options for different effects) then selected my fixtures, hit chase, held shift and span the encoder wheel to fan the offset of the effect until the chase matched up on all battens. Worked super nicely and certainly opens up some more interesting possibilities for programming
Battens Chase LQ.mp4