I'm talking about 100+ foot channels,alot of the banks drop straight down deep.I fish one here in Va. and it was man made back in the late 60's.Most everything was dug out and alot of the bottom is slick.....except for humps and roadbeds there is not a whole lot more structure around such as stumps,grasslines,mats or rocks,(other than rip rap.)Anybody got any advice on deep lakes?Keep in mind,the lake is big (25,000+ acres) and very deep.Let's hear it!                      

 You answered your own question.I fish a few deep lakes in Tenn. every year and you got to look for the humps close to the creek channels,other areas I look for are tapered points,clay banks,and any kind of pea gravel or shale.