Season in OK was abnormal too from my experience and pretty much all the other hunters i spoke to. The warm winter and rain really greened up the country at a usually early rate. This seemed to scattered the birds to the wind and the usual tactics of sitting on the old deer plots and waiting for feeding birds was mostly a waste of time. I think only 1 of the 8 or so birds taken by me and the guys i hunt with were taken by walking and calling and finally picking up a hot bird. With only 11 acres to play with that is gonna be rough for you, i was covering probably 200 or so acres in a zigzag pattern and would only hear maybe a couple of birds a day that were within the area im allowed to hunt.
Id just stick with it, i was in the woods for 6 days, all day before i finally got my first bird, then about 4 days later i managed to get my second at the same exact spot, it must of been a popular turkey spot i guess!