Got a small backyard pond that we co-own with other neighbors, basically a retention pond to prevent flooding. My family is pretty much only ones that fish it much, has bass and bluegill. One neighbor actually feeds the fish day old bread and really fattens them up! Anyhow, was thinking about sinking old Christmas tree or two to create some cover plus concentrate gills to icefish over during winter. Any hints or tips in doing it right or wrong? Should they go in deeper part? Pond goes up and down a lot, deep part is only 7 feet now but will be 12 feet when full first half of summer. Thanks.