I assembled this one real cheap>
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The tripod is not light weight, steel and has a smooth flat top. It came with a tupper ware type plastic table that was useless. I tossed the plastic top and cut up some 3/4 exterior 5 plywood - nice and rigid. On the bottom I took one of wifey's Martha Stewart Teflon 10 inch fry pan and bolted it to the bottom of the plywood, Teflon side down. I then drilled a 7/8 hole thru the middle of the fry pan, placed a 5/8 bolt thru fry pan & plywood and used washers & big wing nut to adjust friction resistance, Teflon against smooth tripod top. When lowered to sitting height the assembly is quite stable - wide stance for tripod legs.
I can use my 15X56 binocs on sandbags or spotter on shorty tripod. No jiggle provided I don't push on assembly.
I can bolt a Caldwell Lead Sled on top of plywood for rifle use using elevation adjust on lead sled & Teflon fry pan friction for turning. Some 400 yard hits on rodents.
Since this photo I have trimmed plywood for better fit and fastened facia on plywood edges. I spray painted it a nice olive-green color.
Plywood surface is nice at lunch time. Last time it was roasted beef sandwiches, cold watermelon, and Constant Comment Iced Tea.