Keep your recruiting confidential. Accepting applications' is a good way to start. Accepting applications does not mean every applicant gets an interview. The application can be a great way to screen out inappropriate applicants and focus on needs. Build a database of solid applicants for a 'rainy day'.
Many successful businesses have 'back-ups' for every position.
Sometimes several phone calls can result in a timely and appropriate hire. Current employees may be worried when first starting continuous recruitment. Tell them you are recruiting for anticipated growth and improvement. If they are fearful for their positions they may improve their performance. After a period they will become accustomed to continuous recruitment.