You can rent kayaks from kayakpower.com. They will deliver the kayak to the lake for you and help you launch. All kayak / canoe rentals are based on a per person rental, a single is 1 rental, a double is 2 rentals.
There are two main options for renting, 1/2 day or up to 4 hours on the water is $ 25 per person.
1 day or up to 8 hours on the water is $ 50 per person. More info at www.kayakpower.com
There are also kayaks and paddle boats available for rent at Lakeside Park in the City of Rowlett. These rentals are through the City of Rowlett and in a great park and area of the lake.