In reply to i.munro: Thanks for your concern but I am 100% happy with tying a fig 8, as well as many other knots, and have been on rock many times before, all be it may years ago. I intend to set up with a static line as I had first planned and as in the way advised through these threads (DISPUTES ABOUT THE IDEAL KNOT TO USE ASIDE!).
I'm just trying to get as much practical info as possible from more experienced climbers, I believe this is what this section of the forum is about.
The sling solution was simply suggested by someone as an alternative - I was a little sceptical when I heard it so, before I go and use a solution I'm unsure about, I prefer to get some more advice.
I'm old enough and experienced enough in life, and extreme sports, to know that a lack of preparation, information and respect for the challenge only leads to unnecessary risks and dangers. And I'm certainly not so arrogant as to think I know it all and take risks with both my life and somebody elses. So there was really no need to add that patronising comment at the end of your thread.