Very elegant solution Paul. I may convert at some time. (From Jacobson I to Jacobson II - a little like converting from one branch of Baptists to another) I may also convert to an entirely different religion - the Al purists.

There are two difficulties:
- where you have the ends of the larger tube not joining (because they sandwich the plywood section) you will have a dimple where the skin drops down.
- You will have 5 pipes per stringer instead of 4... trying to get all those 24 pipes into a golf bag is already hard. You will be at a total of 30 pipes.

Neither problem is insurmountable - just helping you brainstorm.

The problem I am wrestling with is how to lace up the kayak without wrinkles. At least without underwater wrinkles. It worked great with my greenlander, but this thing may require either seams or wrinkles.

I have been spending the last week helping my pretty put up wall paper and I have wrinkles on the brain.

Rick