I use Autocad, it's the top to project a kite (and much more), I'm developing my own project using that. I had to study a manual to proper use the commands, but be sure it worth. After drawing I put files on an USB key, went to a print shop and printed in 1:1 scale including templates for single parts.
BTW, I'm just going to build that, it's my very first project. After testing it, if it will fly, and will fly fine too, I'll show you. I'm looking forward to that!