I have an NPW 3m and 5m that I have not flown with much success. I got them as part of a package deal when I bought a buggy and other kites. They were set up on handles.
I talked to Susan and Claxton last year at NABX and flew them a bit but I think I would like them more on lines.
I did try the 5m on a 10 ft dacron lines and was not really happy could have been the stretch. So my question is what strength and length lines? Since you keep a lot of pressure on the brake lines do you make them the same size/weight as the top?
Making several sets isn't a problem but I don't want to waste money or time.

100 ft. 300 lbs power and 150 brake. Just remember that nasa wings need brake input. You need to move you hands down the handles to make it easyer to give more brake input. With practice you will not even have to think about the brakes.

Good luck.

Susan

Picking up a set of lines is probably your best bet. I used to fly mine on homemade dacron as they were cheap, now I use my PANSH lines and it flies far better.