Thanks Pete - I'll have another go at the w/e. I think if I can find the forked tree, I'll know my way from there. The tree is quite a distinctive feature, as is the pointed stone - I should be able to spot both of those from the path.
Ayup, I wrote a description which a coupla peeps have found helpful. If you want it, drop me a mail. (Tho you're right about the tree & the pointy stone!)
Address is on my profile :^) Put TMA in the subject or ye might get deleted without opening...!