You'll want to fill your large voids. Water freezing and thawing under the surface, will break down your cork and allow water to saturate.
What Pete isn't telling you about his black cork, its higher density and better quality than you can get now.
Hollywood is the largest user of black cork, and they don't care about quality, so really good, carvers grade black cork is no longer available.
I think Bill Embacher has some pics of a few of my birds with black cork bodies and white pine bottom boards. If he sees this I hope he'd be kind enough to post them.
eddie
Pete and Mike, is that the old "MLB special reserve cork" Mike's talking about?
Lee, Why do you think you need a bottom board on Black Cork? I have hunted my black cork cans every year since I carved them. No babying. They are on long lines and I don't unclip them except from one season to the next. They are hauled around in leaf bags, banged on to get the ice off, etc. The ONLY thing that has happened in 11 or 12 years is that one bill broke on a toledo head. Seal them puppies good with several dunkings in a mixture of linseed and varnish and you won't have a problem. Oh, I guess I should mention, slightly radius the chine to eliminate the possibility of breakout there. I never measured mine but I suppose I have a radius of 1/4" to 1/2".Great looking decoys! Thanks for posting!
On the other hand I would have to add a bottom board to the black cork so it would take more work and extra money.
Lee, Why do you think you need a bottom board on Black Cork? I have hunted my black cork cans every year since I carved them. No babying. They are on long lines and I don't unclip them except from one season to the next. They are hauled around in leaf bags, banged on to get the ice off, etc. The ONLY thing that has happened in 11 or 12 years is that one bill broke on a toledo head. Seal them puppies good with several dunkings in a mixture of linseed and varnish and you won't have a problem. Oh, I guess I should mention, slightly radius the chine to eliminate the possibility of breakout there. I never measured mine but I suppose I have a radius of 1/4" to 1/2".Great looking decoys! Thanks for posting!
On the other hand I would have to add a bottom board to the black cork so it would take more work and extra money.
Why hard chines?
Personally I think decoys ride much better with a slightly rounded chine - not much, like I said 1/4 to 1/2" is fine to prevent cork from splitting out. I don't want a rounded bottom but a little, so I don't need a bottom board, is perfect.