I don't recall it being mentioned in any of the books, but could the Seeker in Quidditch switch to being a Chaser if needed?
I always thought it was odd that catching the Snitch would net your team 150 points but end the game no matter what. It seemed to me that the seeker would be a more valuable player if they could net their team 150 points but not end the game if they were behind. However, the rules clearly state that catching the Snitch ends the game, regardless of how many points the Seeker's team has.
Is it mentioned anywhere whether it is specifically prohibited for a Seeker to help the Chasers score points so that when their team is behind by more than 150 points they aren't essentially useless? Or would the Seeker just try to distract the other team's Seeker at this point?