that's interesting
not knowing any better I'v always just used the words "longdog" or "running dog" as generic terms for any skinny long legged speed machine that runs on rabbit or, well...just rabbit these days
A lurcher will do it mate, same as a spaniel will sit on a peg all day just like a labI have seen a lurcher picking up on a shoot day before now...the fella gets plenty of stick as you can imagine but no-one denies it does the job
Just for walking a beating line almost any well behaved dog will naturally do a half decent job without you even trying