[EdZ]

In your opinion what do you think is the best way to keep the back swing on plane, rft, stt? I seem to go a good job of keeping it on plane with a rft but feel as if there is no club face rotation

One of the biggest reasons people get off plane is that they let their hands move 'out' on the backswing, usually right off the bat - rather than the hands going back, up and in.

This results in a 'lift and roll' move where the hands are too far outside, above plane, while the clubshaft and clubhead are likely too inside and underplane (visually).

Practice your takeaway with the shaft along a picnic bench, which will let you 'allow' the clubface rotation and still stay on plane - tracing a straight plane line