Not another animal I have seen will do the job a deerhound is made for in the hill ground in Scotland, some of the land is hard enough to walk on, rock faces waist high heather hard land for a dog to run for 20 mins then take on a red. You will never find one now but a proper old school deerhound be as hard and game as anything going, they would need to be to do the job.
On the other hand using them on the low land fields they are big not got the pace and agility of the lighter made greyhound x lurchers. I have had them and used them, smaller bitches the best chance.