gas tank cover ?
 

Looks great, are you going to cover your tanks back up ? doesn't look like you have room between the rods and the tank

I didn't want to cover them because of the possibility of trash accumulating between them.
Due to a leak I ended up replacing the port tank with a plastic one. I did cover the plastic one with a piece of 1/4" Starboard to reduce damage from the sun.
As for the metal one, I'm just leaving it as is.

Could make a small snap on cover out of sunbrella material to match your bimini.