There is a boat launch about a mile south of Donner's Bay resort (Sportsman Landing), but here's the deal. Donner's has a $2.00 launch fee. By the time you drive to the free launch, drive the car back, and motor the boat back the extra distance, you'll spend far more than 2 bucks and probably lose a more valuable hour + from you vacation.

Now that the water is up, Donner's is the best deal in your situation since you're staying in Lake Bastine.