The rule is 20-25% in habitat of the surface area of the pond, or in your case, 2 acres. This habitat can and should, imo be a variety of materials. Artificial for winter, when weeds die off, big wood for spring warming, shady habitat for cooler temps. In the summer heat.and natural weeds/vegetation. Boulders and rubbble are also beneficial for most fish. See past posts, tons of great ideas to make or buy.
Last edited by Peepaw; 09/18/12 08:19 PM.