'Tain't that hard to foster a culture of competence within the cockpit. As simple as using the automatics to the full when appropriate, such as crap weather or busy airspace or at the end of a long day.
For raw flying skills, it's a case of 'use it or lose it'. Most weeks (in Australia at least) the environment will present opportunities to TURN IT ALL OFF and hand fly up to 10,000ft and the last 10,000ft to landing. That means the autothrottle, flight directors and autopilot. Do the occasional raw data ILS. If the MEL permits the system to be off, it's all right, it won't bite.
Simply brief your intentions so that your co-pilot does not become terrified at the loss of all the magic. Most co-pilots will look on for a while, realise how simple it is without all the 'fruit' and want to have a go.
And if he doesn't - come next sim check, who am I gonna give the total electrical failure to? Followed by an NDB approach to circle, at night. Or an ILS on the 'peanut gage' as the Yanks call it. By such devious means does one make automatons into pilots.