In reply to poigol5043:
> I was assuming i could just hike up to the top of the crag and use some sort of boulder/tree as an anchor.
Not at most of the Yorkshire sport crags you can't, they're often very steep with a lot of loose rock at the top, the routes stop short of the worst rock so the belay chains are in the middle of nowhere.
> I wanted to know if there's any specific tips/tricks to tying to anchors??
There are lots of 'tricks' and quite a few pitfalls. I'm sorry but without knowing what you already know I suggest you go with someone experienced. At the very least read up safe belay rigging from a book before then get comfortable with the techniques in a safe location before hitting the crag.
> I already have the experience/gear to lead, second, lower off, get my gear back etc
Cool, do that, it's the easiest option. Can you cope with lower-offs that have rethreadable rings rather than a krab to clip?
> Also, i think the thread/block belay options you talked about are what I'm after.
Brimham is probably the best I can think of for finding a good selection of routes with easy no 'gear' belays that can be rigged with just rope, krabs and a little creativity. It's gritstone though and not bolted.