1. Can't remember exactly, but around 90cmx130cm. If you thinking about building your own one, the width should be around from elbow to elbow. The length should should give you free movement, that you will not touch/push the camouflage mesh when you walk. But enough room to somehow stretch you bones. Also not too long, that you will easily turn around without making a big wave.
2. The floating hide is designed to carry the camera equipment only, but it could hold my body. However it is used for shallow water only, between my waist and chest.
Awesome thank you for the tips, I went to the hardware store the other day to price out the materials and will probably start building it in a couple weeks. What kind of fabric do you use to cover the top frame? I have some camo material but it is quite expensive and needs several layers to hide the person inside.