Used Aliens - The Galactic Pool Aliens Trilogy, #1

Used Aliens is an adventure comedy about life across the cosmos and good old-fashioned naughty behavior. When a sabotaged flying saucer crashes into his fishing hole, Jimmy uncovers an alien plot to steal Earth. Jimmy is only interested in using the stranded aliens as guest stars on his TV fishing show. But when evil galactic politicians and our local Almighty find out, Earth's fate depends on Jimmy being useful for a change.