Any big ones out there ?. I needed a 3 man steel blind with a dog box and being the cheap Bastaige I am building one. I bought 3 steel containers from a Olive processor that are made out of 1/4 steel with a 3 inch lip all the way around. Its going in another pasture that gets flooded and the birds pile into it. 3 foot square and 4 feet deep, 600 lbs each. I'm welding a 16 inch foot all the way around it to back fill around it. I would love to bury this blind flush with ground and have a adjustable sleeve that I can raise and lower with water depth. I haven't quite figured that out yet.