In a recent article [Swartzlander et al. Nature Photonics, 5, 4851 (2010)], the optical analogue of conventional, aerodynamic
lift was experimentally demonstrated. When exposed to quasi-plane wave illumination, a dielectric hemicylinder rotates
into a stable configuration in which its cylindrical axis is perpendicular to the direction of propagation and its flat surface
angled to it. In this configuration the body forces experienced by the particle contain a component perpendicular to the
momentum flux of the incident field. This phenomenon can be meaningfully termed "optical lift", and the hemicylinder acts
as a "light foil". Here, we present rigorous, full wave vector simulations of this effect for light foils of varying dimensions
and composition. We investigate the general form of the forces and torques experienced by light foils, as a function of their
orientation. The influence of the linear dimensions and the refractive indices of the hemicylinders is also investigated.