I am trying to find a knot that will perform the same as a prusik, ie, will allow me to tie one rope/cord to the other and keep it's position on the main line under tension of the secondary line but that can be easily moved along the main line without untying the knot.
Can a normal prusik knot be used for this? Everything I've tried so far shows a smaller cord being used to attach to the main line, but I don't have smaller cord (I don't have any cord yet, but when it comes I'd like to know the right knot to use!).
Thanks,
James