Do you use a one-finger G? Two finger G? How about in your efg/EFG triplets?
Just curious.
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One.
Two fingers in lower 8ve except for triplets. One finger in 2nd 8ve.
Lower octave - two (one makes it jump to 2nd 8ve), but only one for tight GFE triplet.
Upper octave - one or two depending on tonal variation desired. Using one and then two in a 2nd octave G roll adds a slight crescendo effect, moresoe if coupled with lifting it off the knee half way through.
One for both octaves on my new chanter 
Mr. Kleen. Whaddya doin’s askin’ such questions on this board?
There is no easy answer. You just tryin’ to provoke us?
Depends on chanter. Depends on octave. Depends on desired effect.
I have one or two fingers off the chanter for the upper octave g, one for tight playing but two mostly…and two to 4 on lower octave depending on effect I want and speed of the tune, transitions, etc. If I plan to have more thatn two off, which is often, the chanter is off the popping strap. I play my rolls on lower G with three fingers off by habit and I don’t know why. Sometimes I irritate myself when I do this but at other times it seems right.
Could you please describe your roll on G? Thanks.
Difficult to do so as there are probably 5 or more different ways I’ll roll on lower octave G depending on tune and effect needed…even depending on my mood…which dictates the tunes I may play on any given day. also depending onm a short or long roll.