We have been to Dale Hollow a few times and rented from Wisdom Dock. They are a pretty good outfit with decent boats and prices. Been a few years, so they probably have some newer boats by now. Dale Hollow is similar to Cumberland. Lots of fingers to check out and lots of cool spots to tie up for the night. My wife and her family used to go to Cumberland every year and rent from State Dock. They loved that too.
One tip I will give for either place. Find a cove for the night that is the right size and tie the boat up in the middle of it (not on either shore), bow to one side of the cove and stern to the other. The first year we did not do this and we were picking up garbage from the 'coons every morning. We even found a snake on board one morning! It can be a little bit of a hassle getting the boat in the middle of the cove, but it is not too bad, especially if you have a fishing boat or kayak or something.