sounds a good cross that bull x to coursing dogbullxgrey x coursing type dogs from what ive heard will tackle what ever in front of them, and ive seen lurcher bred very similar , kill foxes no prob all solo, that bit of pit, and saluki deff fires them up . you got the speed,power,stamina,guts, to deal with that quarry, suppose the prob is lads with coursing or saluki type dogs norm go for daytime big rabbits/deer than old Charlie boy, pre ban days , shame as the dog I seen back in the 80s took all the above quarry no prob, but he was bit sharp with other dogs as well , if they tri