If I understand this right, youre cutting out the bottom panels, and its as if you had a template and set it upside down - the stem and stern curve go the wrong way.

I think the fix for least material used, is to cut two new scarf joints, and add about a foot or so to the panels. Then re-draw them correctly. Be sure to add more than you'll need. It'd probably be easiest to add it to the middle - the bottom keel curve is smallest there.

If you want a shorter boat, simply re-cutting the curves correcly and then fitting the side panels to the shorter bottom probably would not be difficult, but it will change the handling characteristics.

Dont feel bad - I had a major twist in my Cape Charles. The fix was to open up the throat of the bandsaw, and run the seam into it several feet. Then torque it straight. I wish I had a picture, running the boat stern-first into the saw. It worked though!

: I need to clarify my last message (goof up). I curved the ends of the bottom
: of my kayak (stern and bow) the wrong direction. Instead of angling up
: from the bottom, they are angling down. The cuts have already been made.
: Obviously, I am an amature. (My Uncle, who got me into this project, is
: getting married in a few weeks and is too busy to help me). If I re-draw
: and re-cut the ends, my kayak will be 4-6 inches shorter. Would that be a
: problem? What else could I do?