  Viable candidate theories for electroweak dynamical symmetry breaking are
expected to show (near) conformal behaviour in order to accommodate current
phenomenological constraints. In principle, renormalisation group studies using
finite volume renormalisation schemes are well-suited to verify this property
in a given model. The most practical schemes are based on the Schrodinger
functional (SF), but suffer from potentially large O(a) effects. Some care has
to be taken to remove these effects and to set up a scheme where cutoff effects
are small and under control. We here take a step in this direction by analysing
various set-ups for the SF coupling at one-loop order in perturbation theory.
