So it was forecast thunderstorms today. Yesterday at four I decided to stretch the skin on my 1937 sponson HW. With an eye on the diminishing sun ( I use two trees outside) I made haste, and made some serious errors, I cut the canvas wrong and, as you can see, I cobbled a fix. At 11 PM I applied the mildewcide and shrank the skin last night. This morning it looked good (as good as mistakes look) so I went ahead and started my first ever sponson installation. The canvas also had been stretched too tight and it tore about a 4 inch "V" near the gunwale when I cut the excess off. The sponson covered most of the spot. It barely shows. However, all I can say for the error in cutting the canvas wrong is that it is above the waterline. Since I'm doing this canoe for my own use I'll live with the error as long as the canvas does not fall off in some remote lake. I'll post my experience canvassing the sponson in the knowledge section. The above caveat tells the level of skill in the author. Anyone care to guess how that fix will do, or offer advice (re-canvas not considered) as to how to better repair the long tear?