Wow what a great design and may be of great help for the current International Trapseat Class. From the pictures you supplied, what you have created does fit the description of what Trapseat is even though you should be careful in calling them Trapseats sense that name is used by the official class associate, etc. The current Trapseat design that has been produced for the Trapseat class cost us $1000 to $1200. You design may have reduced that cost significantly, that is if it is durable enough and can handle one or two people sitting in it or one person sitting in it while one trapeze off it. My question to you is are your trap seats strong enough to trapeze off of? I noticed the tube in one of your pictures is bent from the weight of you sitting in it, which would be a concern for me. The tube that is bent is the one that goes through the mesh seat on the bottom. I am assuming it would be just as easy to use a little thicker tubes or bigger diameter tubes to increase the strength. I am a little pickier with durability issue sense I am sailing with those with spinal cord injuries and one thing I do not want is a seat to fail. Would you please email me as I would like to talk with you more about your design, etc? My email is info@sail-s.com