I'm sure the experts on here will chime in. From what I see on here they recommend around 20% coverage. So I would say yes lots of vegetation for a 10 acre pond around 2 acres.

The people who say I can't do it can just sit the @^#% down and watch me. Friends call me Rusto I also subscribe to pond boss mag. http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=504716#Post504716