Personally I'd take all trainee ppls outside, point at a cloud and tell them "stay out. Those things kill if you don't know how to deal with them."
I recently did a charter on a fully kitted twin. The lead passenger had a PPL and 150 hours. We were IMC from the climb out until we reached DH on the approach (ILS). The lead passenger sat next to me and despite having a full set of instruments felt disorientated. He had been told that if you enter IMC you should do a 180 out of it. I've looked inside his R44 and doubt that a low hour/uncurrent pilot could carry out such a manouvre with any level of safety with the kit provdided and the position it is in. The cockpit layout is in no way conducive to accurate IF.
He's been great for business. When the weather is iffy the '44 stays in his shed and he hires us to get him there. If we say no then he knows it is meant purely on safety grounds.
Many of us have found ourselves in bad positions and luck more than skill has kept us alive. My customer has learned a lot flying as a passenger and has the sense to never try anything beyond his personally set limits. Too many people who own private helis are succesful in one area of life and believe that therefore they can be succesful at everything. The ego trap then opens before them. The lucky ones dodge the trap and learn some humbling lessons,
The unlucky get their actions discussed on here, at length.
I'd like to get to retirement without ever appearing on here as a statistic, and I'd like the same for everyone else.
VH