Rolls are 12x100 which is what makes it annoying to seal - it’s not just sealing one giant tarp if that makes sense, it’s sealing 5 rolls laid along each other.Burying the ends does indeed make it work better/faster. But if you have big-assed tree trunks that you can move with your tractor that will work, too. If you're looking for solarization you need to use clear plastic. If you use black plastic it's called Occultation, and it takes longer. Even in the colder weather it should work within 2 months. You want to monitor it though. If you do it for too long you kill all the worms etc. in the soil, and it will take time to create a new, healthy biosphere in that area.
I ordered sandbags to use for more weight and I’ll throw more logs on it. It won’t be airtight. I guess I’ll stick with the clear and see how it goes.. The good news is that this area is in direct sun and Florida rain is low this time of year. Thanks