i can honestly say i never had to dig to a rabbit, had a few bolt out of pipes, and the odd one out of an earth. one shoot i used to do had a big long bank full of holes. some rabbity, some earths,some abit of both, just used to collar a dog up and run it off the slip, they'd stick there head in & sniff, if a fox was at home they'd enter and find, if not, move on to the next one. like i said in my previous post, every cripple has his way of walking, just cause i had no problems does'nt mean it is THE way of doing things, just worked for me and the dog's i have owned in the past. A.T.B...