You guys just dont know how to set them up properly, the key is in the bungee on ONE end and getting the lines tight. As far as wind goes you have to go "with" the wind, when set up well they work GREAT (=not lame) for LEARNING and until you can 270 on to a 30 ft Rave all ways you havent outgrown it.
I do agree the 80 footer didnt work, but the 40 ft works great.
Here is a shot of my 30 fter, only one I have and we all have lots of FUN (I think thats the point) one them. They are overpriced, but worth every penny of 500 bucks and you can find them for that.