Consider making a wood or plastic frame and float it with 4x8 sheets of foam board. Use as many 3/4"-2" thick foam sheets as it takes to get the top the required height out of the water. You may need a walk-up ramp so ducks can easily get onto the floating island. Be aware that ducks and waterfowl speed up the aging, eutrophication, and increased algae production of a water body due to their abundant fertile manure production.
Last edited by Bill Cody; 10/29/11 07:37 AM.
