CRM as practiced by the airlines has little relation SP ops. MPA CRM is a set of techniques and practices that are designed to ensure an accurate and consistent view of situation awareness shared between the flightdeck crew. Evaluating MPA CRM means evaluating key behaviour markers, more than anything else.
Clearly a single pilot is not concerned with such synergies.
Obviously the subset of the NOTECHS system pertaining to levels of situational awareness and the subsequent process of risk and threat evaluatioin, error trapping, error mitigation and error correction is relevant to SP and MP alike. But I would regard that as the bedrock of airmanship and not CRM.