Thanks for your help guys. As it seems to be the only decent book available, think I'll give the route planning text a go!
Noticed that it's not freely available in the UK though, only found it on American websites (with huge shipping costs... It must be a big book!)
Does anyone know of an old copy of the book, in need of a loving new home?!
If so, please let me know (or suggestions for a bookstore that supplies it in the UK would be welcome!)
Thanks again for your help!
Jake