Been doing small bed gardening for over 10 yrs. Mostly in ground and then had a raised bed last 3yrs that did well. Had to switch because we moved and dogs now have access to the area. Expanding this year and am so excited. Finally making it happen! Looking for advice on bolts vs screws. I am using plastic wood (recycled) and corrugated sheet metal. Was thinking bolts but now questioning my approach. Any thoughts?? Here is my project I stoked about!!