The only instruction I do anymore is FMS/GPS ops in twins. Last year I was training pilots in a new BE20. All we did was shoot FMS-coupled approaches, fly DME arcs and practice holds. The pilots were experienced and current with flying the procedures but when they'd try to enter it all in the box and let the autopilot do it's job, things would get ugly.
Lately, I've been working with a friend in his C340. He's an excellent pilot but doesn't trust himself with his new "next generation" avionics. We've spent hours flying together in every different IFR departure/arrival/approach scenario he can think up.
In both of the above examples nobody was wearing a hood. We'd fly in blue skies or pouring rain. IFR ops aren't a problem for these guys, most of them have been flying a lot longer than me. The problem was flying with the new technology. I did a good amount of ground to explain how everything worked but they didn't want to fly without someone walking them through it in the air.
Sooooooo... How does one log that? I signed their logbooks. I put all of the flight training procedures we did in the remarks section. We didn't do any "multi-specific" training- no engine failures, Vmc demos, etc. I credited them only for the approaches and holds they flew in actual. Was I acting as a CFI, II, MEI, safety pilot or none of the above?
FWIW-I'm not looking to build time in either A/C. I enjoy flying with these pilots and hope I'm "legal" when I sign their logbooks. Besides, have you seen what you can charge for BE20 instruction?