Like everyone indicated.. there are countless ways. I've even seen a telephone post cut, and then had fencing wrapped around it multiple times.. ( think hotdog.. etc ).
Worked good too. I did the same, untill I 'inherited' a real old heavy 6x8 flexible drag harow from my stepfather. He got tired of seeing it rolled up in the corner of his property and told me to come get it. While there he also helped me load an old ford dual ganged disc harrow.. old, rusty, and beat the heck out of. I disced up about 10 ac of my pasture 2-3 times, before it finally really really needed repair and attentaion. I removed the 2 rear axle sets as they were too far gone.. but fixed up the fronts nice, and welded and beat on it enough so that it is a decent disc for garden plots, etc.
If I ever need to disc alot of stuff again, I'll just buy a cheap new one.. KK has some 6' for 4 something I think..
Soundguy