YLK - YouLikeHits - Traffic by Day

Besides gaining points by purchasing, clicking, premium, etc, does anyone have recommendations for the best time of day to increase points and switch to premium status? I've actually noticed where I'll have 10k+ points and 1day+ of premium with Twitter payout set to the max, 10 points, yet there will be periods where I'll get literally no follows, then others where it's like an influx. Based on that pattern it seems to me it wouldn't be a bad idea to reserve premium status which runs out and definitely makes a difference, for times when there's the most traffic. Curious to see what others have experienced after using the site for a while and if they've picked up on any patterns of usage behavior.