http://www.performbetter.com/detail.aspx_Q_ID_E_3948_A_rnd_E_43
Ah a nice jumbled ball of cord in that photo sure to rip your hips out 
Yes this is the one problem with the ISO, i find it very hard to stop knots developing.
Yea that pic shows that she isnt going anywhere. the best way to keep the knots out is to stretch the line out before you run.