I guess alot of the design/thickness depends on what your plan is. You don't want the patch interfering with outboard mounting, kneebrace supports, splashwell, etc.what thickness aluminum to seal outdrive hole ? Im assuming its .100 transom thickness , so do I need a little extra thickness?
brother if i can get my rig to look as good as your rigs , I will be a happy man. Fantastic work on your boats. Your Chief has got me thinking, lol I love the bigger cabins on those.I deleted the all the rails on my Chief, makes for a less cluttered look to my eye.
I would use .080 -.100 AL for a the cover plate, thickness of it really isn't an issue it's just to keep it sealed up is all.
I think we all run into poor time line prediction on our restorations. lolSorry guys , no pics yet . taking a little longer getting all the foam out . froze. getting the two panels , bulkheads under the dash is taking a little longer as well. I got the cuddy pulled apart and the roof panels out. working on it though.