Greg, My neighbor has the same type of of lake dynamics as mine, He put grass carp in his lake years ago and they don't touch the coontail according to him. I also remember reading that grass carp don't like the stuff, and will only eat it as a last resort. Do you think thats true, or do your grass carp really do a number on the crap. I have carp in my lake but not grass carp. Do you recomend getting rid of the ones I have now and getting grass carp?