Every July and every fall, I do maintenance on my 1/8 acre pond. The maintenance includes cutting all the cattails with The Yard Blade®, picking up the clippings and mowing the bank of the pond. The first few years, there were a lot of cattails, and it would take 2 - 3 hours to cut them all down. Since I have been doing the maintenance twice per year for several years, cattail growth is minimal. It only takes a little over an hour to do complete maintenance on the pond now.
Here is a time lapse video of the maintenance I did on my pond over the weekend.
As you can see, it took just over an hour to cut all the cattails with The Yard Blade®, pick them up and mow the bank.