Thursday night's forecast calls for hours of rain. The usual low-tech method we use to keep our Sukkah dry (a tarp thrown over the schach) is really not great when there's anything more than a drizzle coming down, as the water pools and the tarp sags. So my question is, does anyone have any brilliant ideas for keeping a sukkah dry that can be done in a couple of hours tomorrow with readily available building supplies by some not-quite-so-handy people? Please leave any suggestions in comments. If I use your suggestion (and it works), I'll be your BFF.