In lightweight construction, engineers focus on designing and optimizing lightweight components without compromising their strength and durability. In this process, materials such as polymers are commonly considered for a hybrid construction, or even used as a complete replacement. In this work, we focus on a hybrid component design combining metal and carbon fiber reinforced polymer parts. Here, engineers seek to optimize the interface connection between a polymer and a metal part through the placement of load transmission elements in a mechanical millimetric mesoscale level. To assist engineers in the placement and design process, we extend tensor spines, a 3-D tensor-based visualization technique, to surfaces. This is accomplished by combining texture-based techniques with tensor data. Moreover, we apply a parametrization based on a remeshing process to provide visual guidance during the placement. Finally, we demonstrate and discuss real test cases to validate the benefit of our approach.