I sure don't, and don't know of anyone who does, except for professionals who are nosing the whisky. Reducing to somewhere around 23% ABV may give the best strength for nosing purposes, but it waters down the whisky to the point, IMHO, that it becomes undrinkable. I never add water at all, but if I did, I would add very little to start, try it, add a little more, try again, and stop when it was to my taste. (If I went too far in adding water, I'd just back up by adding more whisky.) Under no circumstances, except nosing, would I add more than 1 part water to 2 parts whisky. And I could really care less about nosing, per se, because it is the taste that matters in the end, so I don't bother with the nosing bit: whatever I smell in the unreduced whisky is its intrinsic smell and I go with that. Slainte, Ed V.