About the only document advice to pilots in the UK for PAR's is this document.
http://www.caa.co.uk/docs/33/ga_srg_09webSSL26.pdf
Alot of the instrument rating schools have there own school notes but there is nothing much offical.
I would agree that you need to fly them manually otherwise the automatics are to coarse. For a 1-2 degree heading change you would just squeeze the rudder you wouldn't be rolling.