In reply to WayneB:
What you've described above isn't a million miles away (although I'm not sure what you mean by a quick link.... a carabiner will do the job where the slings meet.
However, there are a few subtleties in setting up an anchor, which I'm sure you'll be able to discuss with your instructor and build knowledge on. For the style of anchor you are suggesting (or any anchor for that matter), some of the things to think about are:
- Use screwgates throughout your anchor system.
- Consider the direction the anchor will be loaded in and arrange it accordingly.
- Make sure load from the climber is distributed evenly between the anchors (called 'equalising' - the set up described above might not allow for this, unless you are lucky with the bolts and sling lengths).
- C0nsider what will happen if one anchor fails. Will your set up remain safe? (it should do,if done properly).
- The slings in your example above will form a 'v' shape. You need to keep the angle of the 'v' as small as possible (less than about 60 degrees). As it starts to widen, loads on the anchors will increase significantly.
- Watch out for karabiners/slings/ropes being loaded over an edge. Generally a bad thing and may be difficult to avoid (this is why ropes are useful for building anchors!).
There's loads to be learned out there, so your session with an instructor sounds like a sensible plan and I'm sure they will run through some of the above points if you ask nicely.
Have fun!
Mike.