Try Boxer glue and, if you have it, a hunk of liner as a patch. I like to use a rubber tile roller to even the patch out. With the cold water, I think you'll be lucky to get it to stick. There are also self-adhesive underwater patches that may get you through until spring. I suggest you get a pair of wet suit gloves (stores with hunting and fishing gear sell them for winter anglers) so you can work without freezing your hands too badly.