I recommend that you tie them in with a rolling hitch. It's important
that you keep the knot tight as you tie it because you can't fully
tighten it afterwards. If you're unfamiliar with the rolling hitch, go
to: http://www.realknots.com/knots/hitches.htm
This is a very use ful knot for taking the strain off a loaded line to
untie a know, clear a winch, etc.

Fred