It was Waterworth's strike that surprised George Neill's side never mind Linfield, when after 68 seconds, the striker pounced on a through ball from Robert Knox to bundle the ball into the net.
John Rankin had been restored to Hibs' starting line-up and it was the midfielder's deflected cross that fell to Nish on the edge of the box and the big striker strolled forward before slotting the ball past Robert Olejnik at the near post.
Lewis then chipped in with a 52-ball 50 before Robert Croft wrapped up the innings by grabbing the last two wickets to take his tally of first-class scalps for Glamorgan to 991.