The closer you can stay to a consistent schedule the better. Depending on how secure the area is, there are programmable feeders available. Last winter I put 100 RBT/Golden morphs into my pond. They were 10"-12" in size when stocked in late October, and with them being fed daily, they were in the 3# range by April. I have a Stren AquaPro feeder, and I was feeding them about a pound and a quarter of food a day. (Purina AquaMax 600) The trout will disperse through the pond and won't all congregate around the feeder, although a lot will show up for the free food if a consistent schedule is kept.