Just finished my first string job yesterday. I used the TW youtube video. It uses 2x half hitches for the mains and some sort of double loop knot I couldn't do for the crosses so I had to use 2x half hitches again. I'm guessing the double loop knot is better than half hitches? If so should I use it to tie the mains off as well? If any-one has a link to a diagram of the knot(s) I should learn that would be useful - I think a diagram would be better than a video.