thanks pascall for your infomation. your answers were what i had planned so my plans should be right. the plans i am useing are the tornado pointed. it is a slightly longer craft and i like the look.although i wasn't planning on going thicker with the ply , i was going to give it a little extra support around the joints. i didn't want to go thicker with the ply because i wanted to add a little extra in my craft to make it alot more sexy and all round fun craft. hope  you had a great christmas.