The best advice you will get is "Get out with your dog" if you have don't know anyone to get out with chances are if you post that you are looking for a tag along you won't get it. Unless someone is an absolute brilliant judge of character you could be the town crier not jonny tight lips.
Get out with your dog anywhere your dog is likely to smell or spot a rabbit, don't just walk the beaten trail get in the growth, the forest areas ect and act like a complete loon egging your dog on hissing and getting him literally buzzing his tits off it won't take take long till he's flushing the rabbits o