  Much current interest in cosmology has revolved around the peculiar velocity
field of galaxies. Many methods have been proposed to derive this, probably the
most prominent being POTENT (Dekel et al. 1990). However, this is prone to many
forms of systematic error or bias. Here, we examine some of the methods
currently used to minimise these biases, particularly Malmquist corrections,
and highlight some of their pitfalls. As an alternative we propose an iterative
scheme based on Monte Carlo simulations of POTENT that shows noticeable
improvement over the other methods considered.
