I have bar risers on my NT700V, had the same ones on my ST1100.... only 1" but it makes a difference... I do have to occasionally remind myself to bend my arms.. I drop my elbows and pull them together in a stretching exercise when riding....
I bought a Go-Cruise from the US just before going away for a six day outing....
http://www.2wheelride.com/GoCruise_throttle control2.html
This made a huge difference and I found it far better than previous other makes, apart from the NEP on the ST1100.
Unfortunately the NEP doesn't fit the NT so.....
It was around GB?15 less to buy it direct from the US, including postage, than buying the exact same thing in the UK, postage free..... go figure.
I injured my left arm some years ago and was diagnosed as having de quervains tenosynovitis... had a shot... fixed it.... but man that was painful.
http://www.medicinenet.com/de_quervains_tenosynovitis/article.htm#what_are_symptoms_of_de_quervains_tenosynovitis
I buy my gloves for a loose fit also, allowing for some give when broken in... best size is one up from my normal in some makes... so I generally buy XXL... this makes a difference also.
So, on my NT I now have, grip puppies, bar risers and a Go-Cruise..... seems to work well for me.... YEMV.