Buy some brush buster pants or snake chaps, and go for it. Stomp on a brush pile and wait even a minute...while on top of the brush pile. If your with a friend --- you can take turns being a surrogate beagle --- when the rabbit is flushed: Start baying an howling like a beagle on the assumed track of the rabbit that usually goes in a circle, back to the flush point where your partner should be waiting in an area that can afford an open shot at the rabbit. Keep baying in different circle traverse's, if the rabbit doesn't come in on the first traverse. I would go slow to keep the rabbit from holing-up.

If you're in an area that has plenty of huntable rabbits...I would invest in at least 1 beagle with good bloodlines from proven rabbit hunting beagles; if not a whole pack. It'll put a lot more fun and excitement in your rabbit hunting. You can even teach your beagle to retrieve dead rabbits.