Outside of morning drive, I run two per hour. 6 minutes max, 12 per hour with a station promo option. 9am to 7p. 7-12mid we are in syndication with Nights/ Alice Cooper. The stops sets through out the day progress. No two hours are the same, the stops are at differing times. I've found that listeners are more likely to leave during a song they don't like verses a long stop set. We always set up the commercial break with a long music tease to hopefully make the long break worth while. We are never anti commercial. We are not commercial free just "more back to back music". The station focus is on "More Music". If you play the quarter hour game we always sweep at least three.