They're usually hinged, Gordon. The replicas have big swingin' hinges and the originals had flat ones that kept the front of the lid much closer to the body work (as seen above). The quarter-turn latches near the windshield are like the originals, which used a longish square-drive church key to undo both those and similar ones holding the front of the clam down. The Vintage and Beck variants have a more pedestrian pull latch in the center and (usually) a pair of non-functional turn-latch covers close to where they'd be on a real Spyder.
My car came with (semi-) functional turn-latches in the hood, so they'll be retained....
Finished my battery hold downs today and made the gas tank straps.