Starboard for Fuel Tank Cover

[Mulv80]

So I have been thinking of replacing my fuel tank cover with Starboard. My current cover has cracks coming from the inspection plates and is just beat up looking. I would have to recore it this year if I'm going to use it another year. I figure I would have to spend about $100 in materials to recore it. I also need a new cover for the hatch in front of the fuel tank. My thinking is I could buy a half sheet and do both covers. Question is, Do you think 3/4 Starboard or Seaboard is structurally strong enough for this application. Remember on the 79's the fuel tank is about 30" wide by 60" long so it spans a large area?