When to go back to the bag
Most casual SCRABBLE players don't ever exchange their tiles, but it can be to your benefit to refresh your rack. If you're consistently making low-scoring plays, you may consider exchanging your tiles. Make sure you look carefully at all the plays you could make before doing so. There might just be a hidden gem in a mix of letters that seem impossible. But a good rule to remember while playing SCRABBLE - leave as few high-point tiles in your rack as possible.