thenuge,

Sorry for not getting back sooner. Yes, I do burn it to seal it in place.

Straightarrow,

Having used both the over and under knot method and the backserve method I can tell you that I prefer the former as it does make for easier adjustments. The trick is to tie it tight enough so that it is very difficult to move and yet not entirely " set" in one position if you need to move it.