We present new observations of the prominence system on the K3 dwarf Speedy Mic ( BO Mic , HD 197890 ) .
Using an improved technique to track the absorption features in H \alpha we find a very active prominence system with approximately ten prominences on the observable hemisphere per rotation .
From a total of 25 prominences we find an average axial distance of ( 2.85 \pm 0.54 ) R _ { * } which is twice the co-rotation radius above the stellar surface .
We discuss the consequences of these observations on the nature of the supporting magnetic structures .
Two consecutive nights , with complete phase coverage , combined with a further night after a three night gap allow us to study the evolution of the prominence system on two different timescales .
Several of the prominences have counterparts at similar phases on consecutive nights .
During this interval many prominences show evidence for evolution in their heights and phases of observation .
Five nights ( 13 rotation cycles ) later we recover many prominences at approximately the same phases .
Whilst individual prominences change axial distances or appear/re-appear from night-to-night the underlying prominence supporting structures appear to be stable over as many as 13 stellar rotations .