Linda describes Moran as an older man than McNeil. There's only a four-year difference in age between the actors who play the two characters, and Moran doesn't look appreciably older than McNeil.
When Tony hang-glides down to Linda, the beach is empty. But when he lands, there are people walking nearby past Linda.
Tony does a rising card trick for Moran, but Gold is standing directly behind Tony and can see how Tony does the trick. The magician is aware that Gold is there, and no magician would do a trick that would give away the secret to a member of his audience.
Conveniently for the hitman, there's only one "Anthony Blake" listed in the phonebook for the entire LA area.