Yes...sleeve it....and put the knot near the bar...not near the kite...
......this will let the line stretch to absorb energy before it reaches the knot
The correct way is to sleeve the end of the line, tie an overhand knot in the middle of the sleeve, and then sew the sleeve into a loop with the knot at the end.
Does not make any difference which side has the knot, the tension is the same through the whole length of line.
Congrats on 1000 posts!