Hi Mikey,
I don't know I'm so much "in the business" as on the fringes....we are small potatos.<g>
As it stands now, I have about 5000 sq ft of pond area, but I have the luxury here to double or even triple crop them. And I have another 2500 sq ft of liner sitting out there daring me to do something with it.<g>
For marginal stuff, there is probably also about 5000 Sq ft, but it is split up into several shadehouses and I'm too tired to do the math to get an exact figure.
I should be able say I'm tired from wrestling liner, but truth be told....it's muzzleloader season, so work has actually been ignored this week while I lurk in the woods.<g>