Try also 'Grey Goose' by Michael Bratby. 'The Gun Punt Adventure' by Colin Willock A lot of the older British wildfowling books have chapter devoted to it. One of the best is 'The Complete Wildfowler Ashore and Afloat' by Stanley Duncan and Guy Thorn which has everything you need to know and more besides. Hard to find books but worth the effort. Lagopus.....