I see a few folk have added comments while my fat finger was typing
Makes no odd's wot time off day u feed a flight pond, some folk like to feed it every nite 1-2hr's before dusk so barley is still floating on top, some say that brings them in quicker so u get a short sharp flight? Dunno if that realy works
I have always put either 1 or 2 weeks worth in at a time, even when i was on a large duck shoot that used to have a lot off flight pond's that's how we done it and had some tremedous flights.
Ideally u don't want duck sitting on ur pond all day if it's a flight pond which feeding in bulk can encourage, but if u flush them when going in and don't shoot at them they usually come back or go to 1 of other ponds on shoot nearby
Must admit we feed our driving ponds at any time off day as well, wot perdix says makes sense but we just never had the time so they got feed whenever we could get time, this is going back 20 odd years before quads, most of the ponds where a couple of hundered yard+ carry's some a lot further, with old fashioned hunner weight bags. Putting out 1/2 T to 11/2T at a time, now he has tracks and drives kubota and tipping trailer up to edge. Cheating really