Pond Boss Forums Thread Like Summary - Coontail?

Our three year old pond is an acre in size and runs 15’-20’ deep with a large swimming area that starts off the beach from 1’-5’ deep with a bottom of 2” pea gravel covered with 3” of sand.

Was cleaning up in the swim area of our pond today and noticed some coontail. When I got to the 4’ deep area there was plenty that I raked of the bottom.
Coontail really doesn’t bother me that much, but I don’t want it in the swim area. I like it better than filamentous algae that grows because of leaf litter getting in the water. I think the coontail is a progression from the algae and better for the fish and am not worried about it in the deeper water.
We treat the water with Aqaushade about a gallon every two or three months in the warmer weather.

Question is;
How can I keep the coontail out of the swim area?
I really don’t want to put any copper anything in the pond, it’s bad for crawdads and PK shrimp.

I'll chime in with my little bit of experience in the matter of plant inhibition barriers. 5 years ago I placed about 700 square feet of our old household carpeting in patches on the bottom of our pond, adding gravel and road base to hopefully provide spawning sites for our newly added BG.
The intent of the carpeting was to prevent the gravel from disappearing into the bottomless mud. The sunfish have been using some of the spots each year. No elodea has become established on top of the carpet. The elodea thrives on the plain mud bottom.