Ranger has soem good advice there on diver' s. I' ll throw out a couple little things. I love hunting diver' s I think it' s the unltimate but I don' t have an diver decoys so I just use my regular mallards set up in roughly the same aspect the ranger mentioned and that works great believe it or not. In fact thinnking back I can remeber killing more divers of mallard decoys that diver decoys. The only fall back to not using diver dekes is the visual asspect. The coloration on divers differs so much from puddlers that diver' s show up alot farther on bigger water than puddlers becasue of their dark dark blacks and brilliant bright white' s. Thus making them more visible to ducks farther away. Like Rnager said calling is virtually no existent in diver hunting but somtimes you have to call and the good thing about diver calls is they' re cheap, very cheap and they work great. I think I bought mine for $7 and it works great. BUt again like Ranger said read up on diver hunting becsue somthing that works for us may not work you it' s like anything in life you gotta find somthing you like, are comfortable with , and is productive. Diver' s are very forgiving they' re not like mallards the circle and circle. If they don' t come in almost right away they probably won' t come in at all. At most tehy may circle 2 times and that' s it and they are FAST so be prepared for fast paced action when they do decide to come in.