I have a pond (3 to 5 acres)that was built in spring of 2004 but filled before the work was completed. About half the pond is flooded timber and too shallow. Currently I have siphoned pond down to get at most of the trees and shallow area. I have two questions. First I have a few willow trees (small, maybe 5 feet tall) remaining in the area of the pond that is still full of water. They are just sticking out of the water on one straight root maybe 2 inches thick. How do I get rid of these ? Thought about just cutting them down but will they just sprout again? My second question is about the trees and brush that are in the pond area now? I want to use some of it for cover. Can I just push it into loose piles with dozer or will it float?