If u can find birds close to land or grass then ur boat will work.i personally think that the mallards dekes may work but u need dekes with alot of white on them. we hunt over cans and blubills and that works for all the divers. I like to hunt in a layout boat the best bc thats were i have more luck. Alot of times they will get pressured from hunters hunting around grass and land and they will stray from flying over those areas or going anywhere near them , which causes them to raft up in the middle of the big water. In which they do that anyway. But if u can find some in a pocket or around grass then get ur can or blubill or ringneck dekes and make it look natural , in other words how u saw the birds there when u scouted. Also i tend to stay away from callin alot but if u feel the need u can use a mallard call and it will sound just the same. if u dont kno u can look on the DU page and find out what sounds they make.
Echo championship calls prostaff
Avian X Fieldstaff