1 single 2x6 is fine for each bunk. The 4 bunks are good. My 21' boat runs
4 bunks of single 2x6. Make sure the bunks extend beyond the curve of the
bottom. If they are far enough back and the front support moves, all the
force is on the front of the bunk to the boat. Poked a small hole in a
small aluminum boat because of this years ago.
Bill

"Gary Warner" wrote in message
...

Thank you all for answering.

Yea, very likely we'll use something heaver than 2x6s or
possibly two together for each bunk. There will be four
bunks, two on each side. And they will run a very long
percentage of the boat length, probably 15 feet out of
the total 22 feet of the boat. Plus the keel will set on it's
own support. All of this has yet to be worked out exactly
but for this thread I mostly wanted to make the point that
the bunks would be made of wood.

I will look into the carpet as well as the HWM materials.

Again, my thanks.
Gary