Been experimenting with this - put a 6x8 tarp on a extra long 8' pallet. Was a PITA to try to position it and the effort was largly useless. Decided it would be easier to use tarps sunk with cinder blocks. Using cheapest 12x16 tarps at Tractor Supply I cleared out the area around my dock and created a weed free lane through the sunny end of ponds watershield field. Need to add a couple more tarps to the later and then will observe how well they work before doing anymore "tarping". Wading around in the water it felt like the thermocline was around 6' this week - pretty much means that most of the water suitable for fish was either in open water or a jungle of weeds.