ya getting the extension is no problem, I have thought about making simple designs but there are already some great companies out there that service that market, TCT teardrops, hiker trailers and many more. To be honest, I suck working with wood, I am terrible at it! and so yes my trailers cost a little more but its mostly cause I use aluminum and composites material that I am use to working with, one other thing is that since I am just a small company I dont buy in bulk so I have lead times on alot of the parts that I use... I am starting to get to a point where I can buy multiple parts and have them sitting around... lead times suck having to wait on parts.