iv only ever seen gun dog spaniels work on the line as apposed to rough shooting so couldnt comment although many have told me you can get dizzy watching a full spaniel working cover lol,as for the odd yip mine scream like banshees when on the arse of something and not afraid of getting stuck in with the teeth if needed,not forgetting they got fantastic coats on them.
as for where to go next, the pups we got on now are 5/8 spaniel 3/8 terrier,my choc dog to a spaniel/lakey cheers