I used to show Springers and we never trimmed tthe body hair except the throat area. The paws were trimed close and long hair on front legs up to the pad at back of leg and on back legs to the hock.
The ears were trimmed underneath to let them lie flat. Any other surplus was hand stripped such as the topknot and dead hair. This is done just a little every day using thumb and finger and they usually don't mind at all. Some people used rubber thimbles like the typists used to have.
Nowadays the clippers are generally used but I only use them on a badly matted dog.
Mary is a groomer and will help you out . Also Fuddles will tell you of a cunning plan with a comb and elastic band.