I do something similar. My helicopter log book has the "multi-engine night" column re-labelled for instructing hours, and the "other flying" column for turbine hours. If I ever stop instructing, I'll probably make a note in the back of the log book of the total instructing hours, and abandon that column. My f/w long book has a separate column for microlight hours, but I think I'll abandon that now, and just make a note.
I'm still using small size PPL log books. They're not so big to carry around, and I have this idea, when I'm old and grey and no longer allowed to fly, of getting them all bound together, so I want them to be the same size. The trouble is, now that I'm instructing nearly full time, I fill one page of the helicopter log book approximately every two days!!!
Anyway, so long as it's all clear and legal, the CAA don't seem to mind exactly what you do.
Genghis and I just lead complicated flying lives, or at least appear to.
