  We investigate the competing effects of simultaneous presence of chirality
and generalised tumbles in the dynamics of an active Brownian particle. Chiral
active particles perform circular motions that give rise to slow transport at
late times. By interrupting these circular trajectories at the right time or by
performing a tumble at the correct angle, we show that particles can enhance
their diffusion. After deriving exact expressions for the orientational
propagator and correlations, we use this to calculate the first two moments of
displacement. For the effective diffusion coefficient, we study various optimal
tumbling strategies. We show that under optimisation of the tumbling rate, the
case of symmetrically distributed tumbles always give rise to enhanced
diffusion, with an effective diffusion coefficient taking a universal value.
Next, two cases are considered in detail, namely directional reversal and
tumbles at an arbitrary but fixed angle. We discuss how asymmetric tumbles can
enhance diffusion beyond that of symmetric tumbles.
