Check out Too Your Health gym and spa. There are several locations, but the one in Lady Lake is probably the closest to you. It's a great deal at only $220 per year. They have lots of equipment for strength and endurance training, plus free weights, an indoor pool, and racquetball courts. They are open 24 hours during the week as well as extended hours on the weekend. It is a very friendly place with members of all ages and abilities. They also offer numerous group and individual training sessions.
The #1 Best Lady Lake Gym - Too Your Health Spas