This paper describes work on a biologically inspired approach to long term power management in sailing robots. Sailing robots offer the promise of a ﬂexible and low cost ocean observation platform which can either hold station at ﬁxed points or sail transects. Biologically inspired techniques have previously been applied to other power management problems and to miniature sailing robots by ourselves. This work attempted to scale this approach up to a larger (3.65m long) sailing robot and an in hardware simulation to test if these techniques would scale. For reasons that are not currently clear the techniques which had previously yielded signiﬁcant improvements in battery life did not appear to make any difference.