  We study speed and skew deflection-angle dependence on skyrmion deformations
of a tightly bound two-skyrmion state in a synthetic ferrimagnet. We condsider
here, an in-plane uniaxial magnetocrystalline anisotropy-term in order to
induce lateral shape distortions and an overall size modulation of the
skyrmions due to a reduction of the effective out-of-plane anisotropy, thus
affecting the skyrmion speed, skew-deflection and inducing anisotropy in these
quantities with respect to the driving current-angle. Because of frustrated
dipolar interactions in a synthetic ferrimagnet, sizeable skyrmion deformations
can be induced with relatively small induced anisotropy constants and thus a
wide range of tuneability can be achieved. We also show analytically, that a
consequence of the skyrmion deformation can, under certain conditions cause a
skyrmion deflection with respect to driving-current angles, unrelated to the
topological charge. Results are analyzed by a combination of micromagnetic
simulations and a compound particle description within the Thiele-formalism
from which an over-all mobility tensor is constructed. This work offers an
additional path towards in-situ tuning of skyrmion dynamics.
