Hey there,
Don't let anyone tell you that you can't get rabbits without a dog. If you can, find an old barnyard with lots of sheet metal and junk with high grass grown up around them. Stomp them out real, I mean REAL well. If there's a rabbit in there, it may hold, but you can eventually jump 'em. If you can't find a barnyard, go to a pasture with some strains of brush strewn across it or a dry creekbed trenching across it, then walk and stomp these areas out real well. More than one person is helpful, then one shooter can cover each side of the brush. I was on a pheasant hunt where 15 guy or so were stomping across fields like this. Rabbits were everywhere. Sometimes I'd break from the line and backtrack to where I saw a rabbit. They will often run a short ways and stop suddenly, offering a shot, but you'll probably get a lot of shots on the run. You have to lead them well. If they don't see you, they'll probably circle back to where they were jumped at. Really, just act like a beagle would, except you can't sniff them out! The key, in my opinion, is to find some sort of brush or pile of junk or twigs in the middle of a yard or pasture and flush it out. Then if you flush more than one you can get a shot and watch where the others went. Good luck!