AME ad PPL
In the Private pilot forum there is probably very little CRM as the aircraft are not two crew operations . As you stated it should be one or the other single pilot only or CRM.
The danger is a mix of the two which occurred in my situation.
Having said that mix of the two is more likely to occur in private light aircraft where two friends fly together and both want to take part in the flight.
Because they are not following a structured division of duties or often not confirming an action with each other then there must there must be a higher risk of something being missed.
Nowadays especially with the economic climate there are more pilots who cost share and hence flight share.
Maybe there should be training or lectures given in the possible perils of doing so and recommendations for CRM specific to PPLs and private light GA.
Pace