OK...we have been running about 2 dozen sleeper shells in our spread. No problem in the morning hunts but wondering about the late afternoon hunt's. Geese have been coming out from 4:00 PM till Dark, we still have the sleeper shells out and Geese have been sliding off on us. I think that when Geese come out late they want to feed and not sleep. Still want to use shells but with feeder and active heads. Maybe I'm being anal here but I got ta figure this sliding issue out! Too damn cold to watch Geese slide and not pull the trigger. Your thoughts Please. Murph.