sunbrella fabric
i have never used the drop boards on my catalina 380. here in houston, we use companionway covers. they snap on to the hood that covers the sliding hatch. they can be rolled up or just thrown back when entering or leaving the cabin. they have a rolled and pleated construction, so they are rigid enough to hold their shape. they are fairly water repellent because they are made from the same material as a bimini. they also have excellent thermal properties to hold in heat and cooling. i don't have a picture of them, but you will see them on a lot of live aboard boats.
