Michel thanks. I'm aware that the Pryde masts are softer hence I was concerned that the sail would not rig well. I have tried other sails eg. Maui Sails and they rigged poorly.
G, My primary sail for the IS111 is a 7.8m. However I had an old NP RS1 in the garage and thought I'd give it a try. I was really surprised how well it worked. So I thought I'd get my self a more modern sail and also one that fits my existing boom. A more powerful fin would be better, but once powered the 44 worked quite well.