There might already be holes that were drilled before. Prolly filled in with the paint job tho. You can try to feel under deck where the holes are, and may get lucky. You are looking for most likely six holes on each side, 2 forward, 2 middle, and 2 aft. If not that lucky then you will need a couple of helpers to hold up the bimini and open it up, and mark and drill the holes. Not hard really