Yeah, once you get them up over a few hundred feet, they stay up almost perpetually during the day. We did that once on a 1000 yard spool, and it tooks us over two hours to retreive the kite. We were using 80 lb dacron line and I figured the string weight would eventually be a factor, but it just kept taking line, and would've continued had we let it. The kite was just a speck in the sky to us.