I'd consider doing that anyway. Not just chicken wire, but screen on top of that as well to try to catch any seeds from being deposited in the pond...just in case you decide WH was a bad idea.

.10 surface acre pond, 10.5 foot deep. SW LA. The epitome of a mutt pond. BG, LMB, GSF, RES, BH, Warmouth, Longear Sunfish, Gambusia,Mud Minnows, Crappie, and now shiners!!...I subscribe!!