I fly with some very competant F/O's. Their handling is quite good for their lowly hours. However, when the say they have the rwy visual - not flying a visual approach but a striaght in ILS in good Wx - after they've disconnected about 15nm out, they still fly head in until OM. Then it's 75% inside 25% outside down to 200'. Their concept of flying visually is not to look outside. This has caused some to fly through the centreline, at which point I suggested that Mk1 eyeball outside the window might help recover the situation. They are glued to the F.D. in CAVOK, specially at night. Not too good to gain a 'feeling' for the a/c.