I boat there ALL THE TIME. Sorry I did not see your post sooner. Have you gone on your trip yet? Where are you staying? Deerfield? If you haven't been there, you will LOVE it. Lot's of lake but has more of a river feel to it as most of it is less than a mile wide. It is comprised of the Powell and Clinch river which join together about 10 miles from the dam. I've covered most of the lake and I believe it's almost 100 miles from one end to the other.
During the week you can find calm water any where and weekends get fairly busy however you can always find a nice cove to swim in. Water temp last weekend was 86 degrees and it will stay in the 80's until sometime in October. If you go to the memebers photo are you can see my boat on Norris. Also check out
http://www.norrislakeinfo.com/