In the following scenario, does a double word premium apply to both words made on the same turn? Player 1 plays the word "book". Player 2 plays the word "shot", placing the "s" on a double word score space, and also forming the word "books".
From the rules,
When two or more words are formed in the same play, each is scored. The common letter is counted (with full premium value, if any) for each word.