Small Ziploc bags are great to put scorecards in between holes. The downside is pulling the card out to record scores. Even under an umbrella, paper scorecards will get damp and hard to write on.

Using a larger, clear, Ziploc for scorecards allows you to avoid taking the card out to record scores. This keeps the card in much better shape during the round, there is even room to keep a small clip board in the bag so writing is easier.