I usually hunt without dogs so I no the difficulty you are probably having. Do you hunt with a partner? If you do, the best way to go is basically have one person act as you dog and the other person stand by and opening in the brush waiting for a shot. Once you locate some rabbit cover, whoever is acting as the flusher must push through the cover to try driving the rabbits out. Make sure to kick every clump of brush and jump on the piles of brush, you'd be surprised at where a rabbit will hide. The other hunter should be in an area that provides good firing lanes so he can get shots at flushing rabbits. The next piece of cover just switch places. Make sure everyone wears plenty of orange and know where each other is at all times.If hunting alone, I don't even try for rabbits unless there is snow on the ground. I've take a few incidentally while hunting for grouse or pheasants without snow but hunting alone is tough. If there is snow I track rabbits back to their cover and just keep working it back and forth. Hunting rabbits without dogs is tough but can be done.