Campaign Operations p75
Golden Goose enhances Striking and Bombing attacks, while Ground-Hugger enhances Striking and Strafing attacks.
Both of those SPAs allow VTOLs, but make no mention of any benefit they provide VTOLs.
A VTOL could potentially get some benefit from Golden Goose using the VTOL bombing optional rule, but it doesn't seem like it could benefit from Ground-Hugger, since VTOLs perform neither Striking nor Strafing attacks in Classic.
What effect do these SPAs have for a VTOL when playing classic?