Thanks to everyone who helped me with keel dimensins - I have an 18' piece fabricated with the proper height, widths and cove. I forgot to ask - how long should the keel be? I am not sure where it ends exactly. Can anybody tell me? I have a 1929 Old Town 17' Sponson canoe. I will be putting on metal stem bands, if that makes a difference. If anyone has a 17' canoe, can you measure the keel length for me? Thanks.