No waxed lines, I was thinking of cutting lines from a 500' roll to get 2 sets and fly 2 kites with it, maybe 2 500' rolls instead. I thought there was some FAA rules on how high you can fly kites. Does this buy buy buy ever end with kites?
The FAA regs are that something tethered cannot be more then 300'... lower if close to an airport. Keep in mind that kites fly at an angle. So, depending on the kite, 250' line might only put it 150' high.
I think cutting the line in 1/2 for two 250' sets would be good to fly two kites.
Typically people don't fly kites on lines longer then 300' so 250' would be just fine.
Does the buy, buy, buy end? I'll have to get back to you on that.