Not too hard. Taoe on the opposite side from the bevel, if there is one. People use packing tape, or 3M Extreme tape for combat wings or other cases requiring extreme duty. If there is room, tape on both sides of hinge, ensuring that the fit is not too tight to allow the range of movement you want. You can also use Blenderm (very good stuff) as hinge tape, or to seal the hinge gap on larger planes to avoid flutter.

Hope this helps...Chris