After eight years afloat, we've treated ourselves to new hatch awnings, otherwise known as golf brollies. We extend the handle, use a bungee to wrap around the top of the brolly handle and fix it to the hatch curtain rails, then we secure the base in case of winds. It means we can a) shade us and get air and b) get air in the warm weather even if it's raining.
We're pleased.