My wife's cousin has a cottage on Norman and we have visited twice. We were not impressed with the lake. (However he is impressed with Winni every time he visits here). It is a dammed up river, long and narrow. Compared to Winni the water was warm and murky.
Results of secchi disk testing on Norman showed visibility down to 70.4" or 5.9 feet:
http://www.lakenormanpublications.co...8a532f9d3.html
My wife and I sampled a deep spot on Winni the past 5 years. The average visable secchi disk depth was 9.6 meters or 31.5 feet. More than 5 times the viewing depth of Lake Norman.