My plan for winter is to tape the tarp in a couple places to one of these:
https://www.homedepot.com/p/WeatherShield-1-in-x-2-in-x-8-ft-Pressure-Treated-Southern-Pine-Lumber-315412/100024161
Then roll it, maybe twice. Drill a few holes through all of it and use bolts with washers to secure it...
My neighbor recently stumbled into metal roofing that somebody gave him for scrap that he let me pick through. I had bought a tarp to use for the run dry area .... but never got to use it. My plan was to roll it around one of those small pressure treated pieces and drill a hole through and...