If you are talking about multiple knots on the rear leader lines, there should be 3 knots:
Rear Leader Lines Adjustments
There are several knots on the rear leader lines. More power and quicker turning is achieved by shortening the rear lines. The greater the tension on
the lines, the greater the response is in the kite. If you experience difficulty steering when the bar is closer to you, shorten the lines for better
steering.
Be careful: there is a fine point where too much tension causes "over sheeting" of the wingtips. At this
point the kite stalls and falls back towards the power zone. There are three knots on the rear bridle. The ties should be adjusted for different wind
conditions.
Knot A should be used for different light wind conditions.
Knot B is best for average wind conditions.
Knot C is recommended for stronger wind conditions.
Knot A is closest to the kite. Knot C is closest to the trailing end of the leader line.
Instructions snipped from
Page 15 of the 2011 Blade Manual (Picture of knot arrangement is included in the manual).
ATB,
Sam
"I never had any friends later on like the ones I had when I was 12 - Jesus, does anyone?" - The Body by Stephen King