  In this paper we extend Galbis' elegant norm bounds for self-adjoint Toeplitz
operators on the Fock space to bounded and integrable symbols which are
non-radial. The main ingredients are a transplantation of the remarkable
Nicola-Tilli isoperimetric inequality to the realm of Fock-Toeplitz operator
theory and a two-dimensional adaption of Galbis' integration and approximation
arguments.
