Howdy John
Punt gun:
http://www.youtube.com/watch?v=iUiTBC0AfVEThere is available, a video of a punt-gun - in a punt - being fired upon a raft of balloon-ducks at a SxS gathering in Ohio some years ago. If anyone here has the 'puter savvy to post it up, PM me. You and the shooter/owner can work out the M.O. Also, a 4-bore gets touched off on the 'cripples'.
This the same fellow who for years used to fire a blank load from his boat at the Point Mouilee Waterfowl Festival . His grand-daughter, an accomplished duck caller, used to help him by being the 'powder monkey'. He has restored an impressive number of West End of Lake Erie/Detroit River fowling craft, as well.
Anyone interested in the waterfowling clubs, boats and history of the area would find him a solid and documented source. He really needs a dedicated museum to house the material, and a ghost author to produce 'the book.'