Go look at the popular trend of the last 8 years.
Build a proper wooden structure with a slope. attach one end of a (tarp) Shlack to top of structure. At the end and bottom of structure affix a PVC pipe to tarp. Roll the tarp up with the
PVC in the center much like a roll of Bounty and the cardboard center. Tie up on top with heavy duty clothes pin or
heavy Duty Clips. when it start raining remone pins and let it roll down the slope covering your succah.
If you have a hard time understanding this, just take a stroll in your neighborhood. If you have a least a handful of chasidim in your svivah you should find a least a few of these contraptions.
Patent Pending…
Hatzlacha!