alright fellas due to some recent unfortunate winds my ground blinds were completely shredded. bought a new one so I have a portable one but was also considering building a permanent one. have a good spot for it and not planning to put it up in the air. just going to put something together with 2x4s and treated plywood. was wondering if anybody has done this or has any suggestions for building one of these. size, window height, anything along those lines would be greatly appreciated. thanks